feat: implement reports

src/export/typst/config.rs

@@ -43,11 +43,25 @@ pub enum Variant {
     Key,
     /// A bubble sheet matching the form.
     AnswerSheet,
+    /// One student's diagnostic, which carries no questions.
+    StudentReport,
+    /// The instructor's class diagnostic.
+    CohortReport,
 }
 
 impl Variant {
     /// Every variant, in the order `export` writes them.
-    pub const ALL: [Variant; 3] = [Variant::Exam, Variant::Key, Variant::AnswerSheet];
+    pub const ALL: [Variant; 5] = [
+        Variant::Exam,
+        Variant::Key,
+        Variant::AnswerSheet,
+        Variant::StudentReport,
+        Variant::CohortReport,
+    ];
+
+    /// The variants `export typst` produces. A report is not built from an
+    /// assessment record alone, so `export typst` must not default to it.
+    pub const EXAM: [Variant; 3] = [Variant::Exam, Variant::Key, Variant::AnswerSheet];
 
     /// The token used on the command line, in config keys, and in file names.
     pub fn as_str(self) -> &'static str {
@@ -55,6 +69,8 @@ impl Variant {
             Variant::Exam => "exam",
             Variant::Key => "key",
             Variant::AnswerSheet => "answer-sheet",
+            Variant::StudentReport => "student-report",
+            Variant::CohortReport => "cohort-report",
         }
     }
 
@@ -103,6 +119,8 @@ impl Variant {
             Variant::Exam => "",
             Variant::Key => "-key",
             Variant::AnswerSheet => "-answer-sheet",
+            Variant::StudentReport => "-student",
+            Variant::CohortReport => "-cohort",
         }
     }
 }
@@ -422,6 +440,30 @@ impl RenderConfig {
                     calibration: false,
                 };
             }
+            Variant::StudentReport => {
+                // Belt and braces. The student payload is built by
+                // `typst::diagnostic`, which has no question text to reveal in the
+                // first place; this says so in the one place someone would look.
+                config.reveal = Reveal::Nothing;
+                config.stimulus = StimulusMode::Omit;
+                config.fields = Fields {
+                    uid: false,
+                    title: false,
+                    points: true,
+                    level: true,
+                    objectives: true,
+                    topics: false,
+                    assets: false,
+                    source_letters: false,
+                    design: false,
+                    calibration: false,
+                };
+            }
+            Variant::CohortReport => {
+                config.reveal = Reveal::Everything;
+                config.stimulus = StimulusMode::Omit;
+                config.fields.calibration = true;
+            }
         }
         config
     }

src/export/typst/diagnostic.rs

@@ -0,0 +1,904 @@
+// SPDX-License-Identifier: Prosperity-3.0.0
+// Copyright Scientific Computing Studio
+// Source: https://git.scient.ing/education/coursebank
+
+//! Handing a diagnostic to a Typst template.
+//!
+//! The same arrangement the exam export uses: this module decides what the
+//! template is told, the template decides what it looks like, and the two meet at
+//! a marker comment. Nothing here knows about page size or colour.
+//!
+//! Two slots are filled, both already defined for the exam path:
+//!
+//! | Slot | Injected |
+//! |:--|:--|
+//! | `meta` | `#let cb-meta = (...)` — course, assessment, generator, class size |
+//! | `data` | `#let cb-data = (...)` — one student's diagnostic, or the class's |
+//!
+//! The `questions` slot is deliberately unused. It exists to emit question stems,
+//! and a diagnostic has none to emit: see
+//! [`crate::diagnostic::StudentDiagnostic`], which has no field for one. A student
+//! report template that wanted to print a stem would have nothing to print it
+//! from, which is the property worth preserving.
+//!
+//! Prose fields — objective text, the feedback written for a chosen option, a
+//! reading's focus sentence — go through the same markup path as an exam stem, so
+//! `$\Delta G$` in `course.yaml` renders the same way in a report as it does on
+//! the paper.
+
+use crate::assessment::AssessmentFile;
+use crate::catalog::Catalog;
+use crate::diagnostic::{
+    Bin, CohortDiagnostic, CohortObjectiveRow, CohortQuestionRow, StudentDiagnostic, StudyGroup,
+};
+use crate::error::{Error, Result};
+use crate::layout::Layout;
+use crate::typst::config::{RenderConfig, Variant};
+use crate::typst::payload::markup_value;
+use crate::typst::template::{self, Origin, Slot};
+use crate::typst::value::Value;
+
+/// A rendered diagnostic document.
+#[derive(Debug, Clone)]
+pub struct Document {
+    /// Which document this is.
+    pub variant: Variant,
+    /// Where the template came from.
+    pub origin: Origin,
+    /// Which slots it declared.
+    pub slots: Vec<Slot>,
+    /// The Typst source.
+    pub text: String,
+    /// Advisory problems.
+    pub warnings: Vec<String>,
+}
+
+/// The identity block every diagnostic carries.
+#[derive(Debug, Clone)]
+pub struct Meta {
+    /// Course code.
+    pub course_code: String,
+    /// Course title.
+    pub course_title: String,
+    /// The term.
+    pub term: String,
+    /// Institution, when the course names one.
+    pub institution: Option<String>,
+    /// Assessment id.
+    pub assessment_id: String,
+    /// Assessment title.
+    pub assessment_title: String,
+    /// The administration date, as `YYYY-MM-DD`.
+    pub date: Option<String>,
+    /// The day the report was generated.
+    pub generated_on: String,
+    /// The tool version, so a report found later can be traced.
+    pub version: String,
+    /// How many students sat the assessment.
+    pub n_students: usize,
+    /// The course's mastery threshold, so a template can draw the line in the
+    /// same place the classification used.
+    pub mastery_threshold: f64,
+    /// How many items an objective needs before it is classified at all.
+    pub min_items_for_mastery: usize,
+}
+
+impl Meta {
+    /// Builds the identity block.
+    ///
+    /// # Arguments
+    ///
+    /// * `catalog` - the loaded course.
+    /// * `record` - the assessment record.
+    /// * `n_students` - the cohort size.
+    ///
+    /// # Returns
+    ///
+    /// The block.
+    pub fn new(catalog: &Catalog, record: &AssessmentFile, n_students: usize) -> Meta {
+        Meta {
+            course_code: catalog.course.course.code.clone(),
+            course_title: catalog.course.course.title.clone(),
+            term: record
+                .assessment
+                .term
+                .clone()
+                .unwrap_or_else(|| catalog.course.course.term.clone()),
+            institution: catalog.course.course.institution.clone(),
+            assessment_id: record.assessment.id.clone(),
+            assessment_title: record.assessment.title.clone(),
+            date: record.assessment.date.map(|d| d.to_string()),
+            generated_on: crate::date::Date::today().to_string(),
+            version: crate::VERSION.to_string(),
+            n_students,
+            mastery_threshold: catalog.course.policy.mastery_threshold,
+            min_items_for_mastery: catalog.course.policy.min_items_for_mastery,
+        }
+    }
+
+    /// The metadata as a Typst value.
+    fn value(&self, config: &RenderConfig) -> Value {
+        let mut course = Value::dict();
+        course.insert("code", Value::str(&self.course_code));
+        course.insert("title", Value::str(&self.course_title));
+        course.insert("term", Value::str(&self.term));
+        if let Some(institution) = &self.institution {
+            course.insert("institution", Value::str(institution));
+        }
+
+        let mut assessment = Value::dict();
+        assessment.insert("id", Value::str(&self.assessment_id));
+        assessment.insert("title", Value::str(&self.assessment_title));
+        assessment.insert_some("date", self.date.as_ref().map(Value::str));
+
+        let mut generator = Value::dict();
+        generator.insert("tool", Value::str("coursebank"));
+        generator.insert("version", Value::str(&self.version));
+        generator.insert("on", Value::str(&self.generated_on));
+
+        let mut policy = Value::dict();
+        policy.insert("mastery-threshold", Value::Float(self.mastery_threshold));
+        policy.insert(
+            "min-items-for-mastery",
+            Value::Int(self.min_items_for_mastery as i64),
+        );
+
+        let mut out = Value::dict();
+        out.insert("course", course);
+        out.insert("assessment", assessment);
+        out.insert("generator", generator);
+        out.insert("policy", policy);
+        out.insert("class-size", Value::Int(self.n_students as i64));
+        out.insert("extra", extra_value(config));
+        out
+    }
+}
+
+/// The render config's `extra` block, carried through untouched.
+fn extra_value(config: &RenderConfig) -> Value {
+    let mut out = Value::dict();
+    for (key, value) in &config.extra {
+        out.insert(key.clone(), crate::typst::value::from_yaml(value, false));
+    }
+    out
+}
+
+/// One student's diagnostic as a Typst value.
+///
+/// # Arguments
+///
+/// * `diagnostic` - the assembled diagnostic.
+/// * `config` - the render config, for markup handling.
+///
+/// # Returns
+///
+/// A dictionary the template binds as `cb-data`.
+pub fn student_value(diagnostic: &StudentDiagnostic, config: &RenderConfig) -> Value {
+    let content = config.content.is_content();
+    let mut out = Value::dict();
+
+    out.insert("student-key", Value::str(&diagnostic.student_key));
+    out.insert_some("name", diagnostic.name.as_ref().map(Value::str));
+    out.insert_some("sid", diagnostic.sid.as_ref().map(Value::str));
+    out.insert_some("form", diagnostic.form.as_ref().map(Value::str));
+
+    let mut score = Value::dict();
+    score.insert("points", Value::Float(diagnostic.score.points));
+    score.insert("possible", Value::Float(diagnostic.score.points_possible));
+    score.insert("percent", Value::Float(diagnostic.score.percent));
+    score.insert("bonus", Value::Float(diagnostic.score.bonus_points));
+    score.insert("correct", Value::Int(diagnostic.score.correct as i64));
+    score.insert("items", Value::Int(diagnostic.score.n_items as i64));
+    out.insert("score", score);
+
+    if let Some(standing) = &diagnostic.standing {
+        let mut value = Value::dict();
+        value.insert("class-mean", Value::Float(standing.class_mean));
+        value.insert("class-sd", Value::Float(standing.class_sd));
+        value.insert("band", Value::str(&standing.band));
+        value.insert_some("theta", standing.theta.map(Value::Float));
+        value.insert_some("theta-se", standing.theta_se.map(Value::Float));
+        out.insert("standing", value);
+    }
+
+    out.insert(
+        "levels",
+        Value::Array(
+            diagnostic
+                .levels
+                .iter()
+                .map(|level| {
+                    let mut value = Value::dict();
+                    value.insert("level", Value::Int(level.level as i64));
+                    value.insert("name", Value::str(&level.name));
+                    value.insert("blurb", Value::str(&level.blurb));
+                    value.insert("items", Value::Int(level.n_items as i64));
+                    value.insert("rate", Value::Float(level.rate));
+                    value.insert_some("class-rate", level.class_rate.map(Value::Float));
+                    value.insert_some("comparison", level.comparison.as_ref().map(Value::str));
+                    value
+                })
+                .collect(),
+        ),
+    );
+
+    out.insert(
+        "objectives",
+        Value::Array(
+            diagnostic
+                .objectives
+                .iter()
+                .map(|objective| {
+                    let mut value = Value::dict();
+                    value.insert("id", Value::str(&objective.id));
+                    value.insert("text", markup_value(&objective.text, content));
+                    value.insert_some("unit", objective.unit.as_ref().map(Value::str));
+                    value.insert("items", Value::Int(objective.n_items as i64));
+                    value.insert("credit", Value::Float(objective.credit));
+                    value.insert("rate", Value::Float(objective.rate));
+                    value.insert("lower", Value::Float(objective.lower));
+                    value.insert("upper", Value::Float(objective.upper));
+                    value.insert_some("class-rate", objective.class_rate.map(Value::Float));
+                    value.insert("status", Value::str(&objective.status));
+                    value.insert("symbol", Value::str(&objective.symbol));
+                    value.insert("confident", Value::Bool(objective.confident));
+                    value.insert("thin-evidence", Value::Bool(objective.thin_evidence));
+                    value.insert(
+                        "levels",
+                        Value::Array(
+                            objective
+                                .levels
+                                .iter()
+                                .map(|l| Value::Int(*l as i64))
+                                .collect(),
+                        ),
+                    );
+                    value
+                })
+                .collect(),
+        ),
+    );
+
+    let objective_refs = |rows: &[crate::diagnostic::ObjectiveRef]| -> Value {
+        Value::Array(
+            rows.iter()
+                .map(|row| {
+                    let mut value = Value::dict();
+                    value.insert("id", Value::str(&row.id));
+                    value.insert("text", markup_value(&row.text, content));
+                    value.insert("rate", Value::Float(row.rate));
+                    value.insert("items", Value::Int(row.n_items as i64));
+                    value
+                })
+                .collect(),
+        )
+    };
+    out.insert("strengths", objective_refs(&diagnostic.strengths));
+    out.insert("focus", objective_refs(&diagnostic.focus));
+
+    out.insert(
+        "questions",
+        Value::Array(
+            diagnostic
+                .questions
+                .iter()
+                .map(|question| {
+                    let mut value = Value::dict();
+                    value.insert("number", Value::Int(question.number as i64));
+                    value.insert_some("position", question.position.map(|p| Value::Int(p as i64)));
+                    value.insert_some("level", question.level.map(|l| Value::Int(l as i64)));
+                    value.insert(
+                        "objectives",
+                        Value::Array(question.objectives.iter().map(|o| Value::str(o)).collect()),
+                    );
+                    value.insert_some("correct", question.correct.map(Value::Bool));
+                    value.insert("credit", Value::Float(question.credit));
+                    value.insert("bonus", Value::Bool(question.bonus));
+                    value.insert("blank", Value::Bool(question.blank));
+                    value.insert_some("class-rate", question.class_rate.map(Value::Float));
+                    value.insert_some(
+                        "feedback",
+                        question
+                            .feedback
+                            .as_ref()
+                            .map(|text| markup_value(text, content)),
+                    );
+                    value.insert(
+                        "taught-in",
+                        Value::Array(question.taught_in.iter().map(|s| Value::str(s)).collect()),
+                    );
+                    value
+                })
+                .collect(),
+        ),
+    );
+
+    out.insert(
+        "study",
+        Value::Array(
+            diagnostic
+                .study
+                .iter()
+                .map(|group| study_value(group, content))
+                .collect(),
+        ),
+    );
+
+    out
+}
+
+/// One study group as a Typst value.
+fn study_value(group: &StudyGroup, content: bool) -> Value {
+    let mut out = Value::dict();
+    out.insert("objective", Value::str(&group.objective));
+    out.insert("text", markup_value(&group.text, content));
+    out.insert("rate", Value::Float(group.rate));
+    out.insert(
+        "readings",
+        Value::Array(
+            group
+                .readings
+                .iter()
+                .map(|reading| {
+                    let mut value = Value::dict();
+                    value.insert("citation", Value::str(&reading.citation));
+                    value.insert("lecture", Value::str(&reading.lecture));
+                    value.insert("lecture-title", Value::str(&reading.lecture_title));
+                    value.insert_some("url", reading.url.as_ref().map(Value::str));
+                    value.insert_some(
+                        "focus",
+                        reading.focus.as_ref().map(|t| markup_value(t, content)),
+                    );
+                    value.insert_some(
+                        "summary",
+                        reading.summary.as_ref().map(|t| markup_value(t, content)),
+                    );
+                    value.insert("supplemental", Value::Bool(reading.supplemental));
+                    value
+                })
+                .collect(),
+        ),
+    );
+    out
+}
+
+/// The class diagnostic as a Typst value.
+///
+/// # Arguments
+///
+/// * `diagnostic` - the assembled diagnostic.
+/// * `config` - the render config, for markup handling.
+///
+/// # Returns
+///
+/// A dictionary the template binds as `cb-data`.
+pub fn cohort_value(diagnostic: &CohortDiagnostic, config: &RenderConfig) -> Value {
+    let content = config.content.is_content();
+    let mut out = Value::dict();
+
+    out.insert("students", Value::Int(diagnostic.n_students as i64));
+    out.insert("items", Value::Int(diagnostic.n_items as i64));
+
+    let mut distribution = Value::dict();
+    distribution.insert("mean", Value::Float(diagnostic.distribution.mean));
+    distribution.insert("median", Value::Float(diagnostic.distribution.median));
+    distribution.insert("sd", Value::Float(diagnostic.distribution.sd));
+    distribution.insert("min", Value::Float(diagnostic.distribution.min));
+    distribution.insert("max", Value::Float(diagnostic.distribution.max));
+    distribution.insert(
+        "bins",
+        Value::Array(diagnostic.distribution.bins.iter().map(bin_value).collect()),
+    );
+    out.insert("distribution", distribution);
+
+    let mut reliability = Value::dict();
+    reliability.insert_some("alpha", diagnostic.reliability.alpha.map(Value::Float));
+    reliability.insert_some("sem", diagnostic.reliability.sem.map(Value::Float));
+    reliability.insert("mean-p", Value::Float(diagnostic.reliability.mean_p));
+    reliability.insert_some(
+        "mean-point-biserial",
+        diagnostic.reliability.mean_point_biserial.map(Value::Float),
+    );
+    reliability.insert(
+        "interpretation",
+        Value::str(&diagnostic.reliability.interpretation),
+    );
+    out.insert("reliability", reliability);
+
+    out.insert(
+        "levels",
+        Value::Array(
+            diagnostic
+                .levels
+                .iter()
+                .map(|level| {
+                    let mut value = Value::dict();
+                    value.insert("level", Value::Int(level.level as i64));
+                    value.insert("name", Value::str(&level.name));
+                    value.insert("items", Value::Int(level.n_items as i64));
+                    value.insert("rate", Value::Float(level.rate));
+                    value
+                })
+                .collect(),
+        ),
+    );
+
+    out.insert(
+        "objectives",
+        Value::Array(
+            diagnostic
+                .objectives
+                .iter()
+                .map(|o| cohort_objective_value(o, content))
+                .collect(),
+        ),
+    );
+    out.insert(
+        "gaps",
+        Value::Array(
+            diagnostic
+                .gaps
+                .iter()
+                .map(|o| cohort_objective_value(o, content))
+                .collect(),
+        ),
+    );
+
+    out.insert(
+        "questions",
+        Value::Array(
+            diagnostic
+                .questions
+                .iter()
+                .map(|q| cohort_question_value(q, content))
+                .collect(),
+        ),
+    );
+    out.insert(
+        "revise",
+        Value::Array(
+            diagnostic
+                .revise
+                .iter()
+                .map(|q| cohort_question_value(q, content))
+                .collect(),
+        ),
+    );
+
+    out.insert(
+        "forms",
+        Value::Array(
+            diagnostic
+                .forms
+                .iter()
+                .map(|form| {
+                    let mut value = Value::dict();
+                    value.insert("id", Value::str(&form.id));
+                    value.insert("students", Value::Int(form.n_students as i64));
+                    value.insert("mean", Value::Float(form.mean));
+                    value.insert("sd", Value::Float(form.sd));
+                    value
+                })
+                .collect(),
+        ),
+    );
+
+    out.insert(
+        "blueprint",
+        Value::Array(diagnostic.blueprint.iter().map(|s| Value::str(s)).collect()),
+    );
+
+    out.insert(
+        "patterns",
+        Value::Array(
+            diagnostic
+                .patterns
+                .iter()
+                .map(|pattern| {
+                    let mut value = Value::dict();
+                    value.insert("label", Value::str(&pattern.label));
+                    value.insert("students", Value::Int(pattern.n_students as i64));
+                    let mut means = Value::dict();
+                    for (level, mean) in &pattern.level_means {
+                        means.insert(format!("l{level}"), Value::Float(*mean));
+                    }
+                    value.insert("level-means", means);
+                    value
+                })
+                .collect(),
+        ),
+    );
+
+    out.insert(
+        "warnings",
+        Value::Array(diagnostic.warnings.iter().map(|s| Value::str(s)).collect()),
+    );
+
+    out
+}
+
+/// One histogram bin as a Typst value.
+fn bin_value(bin: &Bin) -> Value {
+    let mut value = Value::dict();
+    value.insert("low", Value::Int(bin.low as i64));
+    value.insert("high", Value::Int(bin.high as i64));
+    value.insert("count", Value::Int(bin.count as i64));
+    value
+}
+
+/// One class objective row as a Typst value.
+fn cohort_objective_value(objective: &CohortObjectiveRow, content: bool) -> Value {
+    let mut value = Value::dict();
+    value.insert("id", Value::str(&objective.id));
+    value.insert("text", markup_value(&objective.text, content));
+    value.insert("items", Value::Int(objective.n_items as i64));
+    value.insert("rate", Value::Float(objective.rate));
+    value.insert("meeting", Value::Int(objective.meeting as i64));
+    value.insert("developing", Value::Int(objective.developing as i64));
+    value.insert("not-yet", Value::Int(objective.not_yet as i64));
+    value.insert("thin", Value::Int(objective.thin as i64));
+    value.insert("below-threshold", Value::Bool(objective.below_threshold));
+    value
+}
+
+/// One class question row as a Typst value.
+fn cohort_question_value(question: &CohortQuestionRow, content: bool) -> Value {
+    let mut value = Value::dict();
+    value.insert("number", Value::Int(question.number as i64));
+    value.insert_some("item", question.item.as_ref().map(Value::str));
+    value.insert_some("level", question.level.map(|l| Value::Int(l as i64)));
+    value.insert(
+        "objectives",
+        Value::Array(question.objectives.iter().map(|o| Value::str(o)).collect()),
+    );
+    value.insert("p", Value::Float(question.p_value));
+    value.insert_some("point-biserial", question.point_biserial.map(Value::Float));
+    value.insert_some("discrimination", question.discrimination.map(Value::Float));
+    value.insert("blank-rate", Value::Float(question.blank_rate));
+    value.insert(
+        "key",
+        Value::Array(question.key.iter().map(|k| Value::str(k)).collect()),
+    );
+    value.insert(
+        "options",
+        Value::Array(
+            question
+                .options
+                .iter()
+                .map(|option| {
+                    let mut value = Value::dict();
+                    value.insert("letter", Value::str(&option.letter));
+                    value.insert("count", Value::Int(option.count as i64));
+                    value.insert("rate", Value::Float(option.rate));
+                    value.insert("is-key", Value::Bool(option.is_key));
+                    value.insert_some("point-biserial", option.point_biserial.map(Value::Float));
+                    value.insert("nonfunctioning", Value::Bool(option.nonfunctioning));
+                    value
+                })
+                .collect(),
+        ),
+    );
+    value.insert(
+        "flags",
+        Value::Array(question.flags.iter().map(|f| Value::str(f)).collect()),
+    );
+    value.insert(
+        "notes",
+        Value::Array(
+            question
+                .notes
+                .iter()
+                .map(|n| markup_value(n, content))
+                .collect(),
+        ),
+    );
+    let mut by_form = Value::dict();
+    for (form, p) in &question.by_form {
+        by_form.insert(form.clone(), Value::Float(*p));
+    }
+    value.insert("by-form", by_form);
+    value
+}
+
+/// Emits a `#let` binding for a slot.
+fn binding(name: &str, value: &Value) -> String {
+    format!("#let {name} = {}\n", value.to_typst(0))
+}
+
+/// Renders one student's report.
+///
+/// # Arguments
+///
+/// * `layout` - the course layout, for the template lookup.
+/// * `meta` - the identity block.
+/// * `diagnostic` - the student's diagnostic.
+/// * `config` - the render config for this variant.
+/// * `explicit` - a template path overriding the lookup.
+///
+/// # Returns
+///
+/// The rendered document.
+///
+/// # Errors
+///
+/// Returns [`Error::Io`] when an explicit template cannot be read and
+/// [`Error::Invalid`] when a template's markers are malformed.
+pub fn render_student(
+    layout: &Layout,
+    meta: &Meta,
+    diagnostic: &StudentDiagnostic,
+    config: &RenderConfig,
+    explicit: Option<&std::path::Path>,
+) -> Result<Document> {
+    render(
+        layout,
+        Variant::StudentReport,
+        &meta.assessment_id,
+        meta,
+        student_value(diagnostic, config),
+        config,
+        explicit,
+    )
+}
+
+/// Renders the class report.
+///
+/// # Arguments
+///
+/// * `layout` - the course layout, for the template lookup.
+/// * `meta` - the identity block.
+/// * `diagnostic` - the class diagnostic.
+/// * `config` - the render config for this variant.
+/// * `explicit` - a template path overriding the lookup.
+///
+/// # Returns
+///
+/// The rendered document.
+///
+/// # Errors
+///
+/// As [`render_student`].
+pub fn render_cohort(
+    layout: &Layout,
+    meta: &Meta,
+    diagnostic: &CohortDiagnostic,
+    config: &RenderConfig,
+    explicit: Option<&std::path::Path>,
+) -> Result<Document> {
+    render(
+        layout,
+        Variant::CohortReport,
+        &meta.assessment_id,
+        meta,
+        cohort_value(diagnostic, config),
+        config,
+        explicit,
+    )
+}
+
+/// The shared rendering path.
+#[allow(clippy::too_many_arguments)]
+fn render(
+    layout: &Layout,
+    variant: Variant,
+    assessment_id: &str,
+    meta: &Meta,
+    data: Value,
+    config: &RenderConfig,
+    explicit: Option<&std::path::Path>,
+) -> Result<Document> {
+    let template = template::load(layout, variant, Some(assessment_id), explicit)?;
+
+    let mut bodies = Vec::new();
+    if template.wants(Slot::Meta) {
+        bodies.push((
+            Slot::Meta,
+            binding(&config.meta_binding, &meta.value(config)),
+        ));
+    }
+    if template.wants(Slot::Data) {
+        bodies.push((Slot::Data, binding(&config.data_binding, &data)));
+    }
+
+    let mut warnings = Vec::new();
+    if template.is_inert() {
+        warnings.push(format!(
+            "the template {} declares no coursebank markers, so the report is empty; add `// \
+             coursebank:data` where the body belongs",
+            template.origin
+        ));
+    } else if !template.wants(Slot::Data) {
+        warnings.push(format!(
+            "the template {} declares no `data` slot, so it received the metadata but not the \
+             report itself",
+            template.origin
+        ));
+    }
+    if template.wants(Slot::Questions) {
+        return Err(Error::Invalid(vec![format!(
+            "the template {} declares a `questions` slot, but a diagnostic report carries no \
+             questions to fill it with. Remove the marker: a report that reproduces the exam \
+             cannot be returned before a makeup is given",
+            template.origin
+        )]));
+    }
+
+    Ok(Document {
+        variant,
+        origin: template.origin.clone(),
+        slots: template.slots(),
+        text: template.render(&bodies),
+        warnings,
+    })
+}
+
+/// The file stem a student's report is written under.
+///
+/// Uses the student key rather than the name: a key is unique, filesystem-safe,
+/// and already a pseudonym when the store is pseudonymized.
+///
+/// # Arguments
+///
+/// * `assessment_id` - the assessment id.
+/// * `student_key` - the student key.
+///
+/// # Returns
+///
+/// The stem, with no extension.
+pub fn student_stem(assessment_id: &str, student_key: &str) -> String {
+    let safe: String = student_key
+        .chars()
+        .map(|c| {
+            if c.is_ascii_alphanumeric() || c == '-' || c == '_' {
+                c
+            } else {
+                '-'
+            }
+        })
+        .collect();
+    format!("{assessment_id}-{safe}")
+}
+
+/// Summarizes what a set of rendered reports covered, for the command line.
+///
+/// # Arguments
+///
+/// * `written` - how many files were written.
+/// * `students` - how many students they cover.
+///
+/// # Returns
+///
+/// A sentence.
+pub fn summary(written: usize, students: usize) -> String {
+    format!(
+        "{written} file(s) for {students} student(s); compile them with `typst compile` or the \
+         loop in the guide"
+    )
+}
+
+/// Tallies what a class diagnostic would tell you to do next.
+///
+/// Kept here rather than in the template so that the command line and the PDF
+/// agree about what counts as a finding.
+///
+/// # Arguments
+///
+/// * `diagnostic` - the class diagnostic.
+///
+/// # Returns
+///
+/// Short lines, most important first.
+pub fn headline(diagnostic: &CohortDiagnostic) -> Vec<String> {
+    let mut out = Vec::new();
+    out.push(format!(
+        "{} student(s), mean {:.0}% (SD {:.1}), median {:.0}%",
+        diagnostic.n_students,
+        diagnostic.distribution.mean,
+        diagnostic.distribution.sd,
+        diagnostic.distribution.median
+    ));
+    if !diagnostic.gaps.is_empty() {
+        out.push(format!(
+            "{} objective(s) the class did not meet; worst is {} at {:.0}%",
+            diagnostic.gaps.len(),
+            diagnostic.gaps[0].id,
+            diagnostic.gaps[0].rate * 100.0
+        ));
+    }
+    if !diagnostic.revise.is_empty() {
+        let numbers: Vec<String> = diagnostic
+            .revise
+            .iter()
+            .take(6)
+            .map(|q| format!("q{}", q.number))
+            .collect();
+        out.push(format!(
+            "{} question(s) to look at before reuse: {}",
+            diagnostic.revise.len(),
+            numbers.join(", ")
+        ));
+    }
+    if diagnostic.forms.len() > 1 {
+        let spread = diagnostic
+            .forms
+            .iter()
+            .map(|f| f.mean)
+            .fold(f64::NEG_INFINITY, f64::max)
+            - diagnostic
+                .forms
+                .iter()
+                .map(|f| f.mean)
+                .fold(f64::INFINITY, f64::min);
+        out.push(format!(
+            "{} forms, {:.0} points apart at the mean",
+            diagnostic.forms.len(),
+            spread
+        ));
+    }
+    out
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::diagnostic::{Distribution, ReliabilityRow};
+
+    fn empty_cohort() -> CohortDiagnostic {
+        CohortDiagnostic {
+            n_students: 24,
+            n_items: 36,
+            distribution: Distribution {
+                mean: 72.5,
+                median: 74.0,
+                sd: 12.0,
+                min: 41.0,
+                max: 97.0,
+                bins: vec![Bin {
+                    low: 70,
+                    high: 80,
+                    count: 9,
+                }],
+            },
+            reliability: ReliabilityRow {
+                alpha: Some(0.71),
+                sem: Some(2.1),
+                mean_p: 0.72,
+                mean_point_biserial: Some(0.24),
+                interpretation: "acceptable for a classroom exam".into(),
+            },
+            levels: Vec::new(),
+            objectives: Vec::new(),
+            gaps: Vec::new(),
+            questions: Vec::new(),
+            revise: Vec::new(),
+            forms: Vec::new(),
+            blueprint: Vec::new(),
+            patterns: Vec::new(),
+            warnings: Vec::new(),
+        }
+    }
+
+    #[test]
+    fn the_headline_leads_with_the_distribution() {
+        let lines = headline(&empty_cohort());
+        assert!(lines[0].contains("24 student(s)"), "{lines:?}");
+        assert!(
+            lines[0].contains("73%") || lines[0].contains("72%"),
+            "{lines:?}"
+        );
+    }
+
+    #[test]
+    fn a_student_stem_is_filesystem_safe() {
+        assert_eq!(student_stem("e1", "s-9f8e7d"), "e1-s-9f8e7d");
+        assert_eq!(student_stem("e1", "ada@x.edu"), "e1-ada-x-edu");
+    }
+
+    #[test]
+    fn the_cohort_value_carries_no_question_text() {
+        let config = RenderConfig::for_variant(Variant::CohortReport);
+        let text = cohort_value(&empty_cohort(), &config).to_typst(0);
+        assert!(text.contains("reliability"));
+        assert!(!text.contains("stem"));
+    }
+}

src/export/typst/payload.rs

@@ -1123,7 +1123,7 @@ fn rewrite_latex_math(source: &str) -> String {
     out
 }
 
-fn markup_value(source: &str, content: bool) -> Value {
+pub(crate) fn markup_value(source: &str, content: bool) -> Value {
     let source = rewrite_latex_math(source);
     if content {
         Value::content(source)

src/export/typst/template.rs

@@ -76,6 +76,12 @@ const EMBEDDED_KEY: &str = include_str!("templates/key.typ");
 /// The bundled answer sheet template.
 const EMBEDDED_ANSWER_SHEET: &str = include_str!("templates/answer-sheet.typ");
 
+/// The bundled student diagnostic template.
+const EMBEDDED_STUDENT_REPORT: &str = include_str!("templates/student-report.typ");
+
+/// The bundled class diagnostic template.
+const EMBEDDED_COHORT_REPORT: &str = include_str!("templates/cohort-report.typ");
+
 /// An injection point a template can declare.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
 pub enum Slot {
@@ -174,6 +180,8 @@ pub fn embedded(variant: Variant) -> &'static str {
         Variant::Exam => EMBEDDED_EXAM,
         Variant::Key => EMBEDDED_KEY,
         Variant::AnswerSheet => EMBEDDED_ANSWER_SHEET,
+        Variant::StudentReport => EMBEDDED_STUDENT_REPORT,
+        Variant::CohortReport => EMBEDDED_COHORT_REPORT,
     }
 }
 

src/export/typst/templates/cohort-report.typ

@@ -0,0 +1,558 @@
+// coursebank — class diagnostic template
+//
+// This file is a template, not generated output. `coursebank report cohort`
+// replaces only the marked regions below.
+//
+//   coursebank template dump --variant cohort-report
+//   typst watch templates/cohort-report.typ
+//
+// Markers:
+//
+//   // coursebank:begin meta     course, assessment, class size, policy
+//   // coursebank:end meta
+//   // coursebank:begin data     the class diagnostic
+//   // coursebank:end data
+//
+// This document is for you, not for the class. It carries item statistics, the
+// revision queue, and the per-option breakdown — everything the student report
+// withholds except the question text itself, which is in the bank where it
+// belongs. Do not hand it out: an option table tells a reader which letter was
+// keyed.
+
+#import "@preview/mitex:0.2.7": mi
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Data
+// ─────────────────────────────────────────────────────────────────────────────
+
+// coursebank:begin meta
+#let cb-meta = (
+  course: (code: "COURSE 101", title: "Sample Course", term: "2026f"),
+  assessment: (id: "sample", title: "Sample assessment", date: "2026-01-01"),
+  generator: (tool: "coursebank", version: "0.0.0", on: "2026-01-02"),
+  policy: (mastery-threshold: 0.75, min-items-for-mastery: 2),
+  class-size: 24,
+  extra: (:),
+)
+// coursebank:end meta
+
+// coursebank:begin data
+#let cb-data = (
+  students: 24,
+  items: 36,
+  distribution: (
+    mean: 71.2, median: 73.0, sd: 11.4, min: 44.0, max: 94.0,
+    bins: (
+      (low: 40, high: 50, count: 1),
+      (low: 50, high: 60, count: 3),
+      (low: 60, high: 70, count: 6),
+      (low: 70, high: 80, count: 9),
+      (low: 80, high: 90, count: 4),
+      (low: 90, high: 100, count: 1),
+    ),
+  ),
+  reliability: (
+    alpha: 0.71, sem: 2.1, mean-p: 0.72, mean-point-biserial: 0.24,
+    interpretation: "Reliability is 0.71, acceptable for a classroom exam.",
+  ),
+  levels: (
+    (level: 1, name: "Remember", items: 6, rate: 0.91),
+    (level: 3, name: "Apply", items: 9, rate: 0.64),
+  ),
+  objectives: (
+    (id: "lo-sample-gap", text: [A sample objective the class struggled with.],
+     items: 3, rate: 0.41, meeting: 4, developing: 7, not-yet: 13, thin: 0,
+     below-threshold: true),
+  ),
+  gaps: (
+    (id: "lo-sample-gap", text: [A sample objective the class struggled with.],
+     items: 3, rate: 0.41, meeting: 4, developing: 7, not-yet: 13, thin: 0,
+     below-threshold: true),
+  ),
+  questions: (
+    (number: 1, item: "bank::q-sample-001", level: 1, objectives: ("lo-sample-gap",),
+     p: 0.42, point-biserial: 0.05, discrimination: 0.10, blank-rate: 0.0,
+     key: ("B",),
+     options: (
+       (letter: "A", count: 9, rate: 0.375, is-key: false, point-biserial: 0.11, nonfunctioning: false),
+       (letter: "B", count: 10, rate: 0.417, is-key: true, point-biserial: 0.05, nonfunctioning: false),
+       (letter: "C", count: 5, rate: 0.208, is-key: false, point-biserial: -0.2, nonfunctioning: false),
+       (letter: "D", count: 0, rate: 0.0, is-key: false, nonfunctioning: true),
+     ),
+     flags: ("ambiguous",),
+     notes: ([Distractor A drew as many strong students as the key.],),
+     by-form: (A: 0.55, B: 0.30)),
+  ),
+  revise: (),
+  forms: (
+    (id: "A", students: 12, mean: 73.5, sd: 10.2),
+    (id: "B", students: 12, mean: 68.9, sd: 12.1),
+  ),
+  blueprint: (),
+  patterns: (),
+  warnings: (),
+)
+// coursebank:end data
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Settings
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let extra = cb-meta.at("extra", default: (:))
+#let accent = rgb(extra.at("accent", default: "#1f4e79"))
+#let body-font = extra.at("font", default: "Roboto")
+#let body-size = eval(extra.at("font-size", default: "9.5pt"))
+#let paper = extra.at("paper", default: "us-letter")
+#let show-options = extra.at("option-tables", default: true)
+
+#let threshold = cb-meta.policy.at("mastery-threshold", default: 0.75)
+
+#let ok-color = rgb("#2a9d8f")
+#let mid-color = rgb("#D19F1F")
+#let bad-color = rgb("#E24E29")
+
+#set page(
+  paper: paper,
+  margin: (x: 1.7cm, y: 2.0cm),
+  header: text(size: 0.8em, fill: luma(110))[
+    #cb-meta.course.code · #cb-meta.assessment.title · class diagnostic
+    #h(1fr)
+    instructor copy
+  ],
+  footer: context text(size: 0.8em, fill: luma(110))[
+    #h(1fr)
+    Page #counter(page).display("1 of 1", both: true)
+  ],
+)
+#set text(font: body-font, size: body-size, lang: "en")
+#set par(justify: false, leading: 0.6em)
+#show heading.where(level: 1): it => block(above: 1.4em, below: 0.7em)[
+  #text(size: 1.15em, weight: "bold", fill: accent)[#it.body]
+  #v(-0.45em)
+  #line(length: 100%, stroke: 0.6pt + accent.lighten(55%))
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Helpers
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let markup(v) = if type(v) == str { eval(v, mode: "markup") } else { v }
+#let pct(rate) = str(calc.round(rate * 100)) + "%"
+#let num(value, digits: 2) = str(calc.round(value, digits: digits))
+#let signed(value) = (if value >= 0 { "+" } else { "" }) + num(value)
+
+#let rate-color(rate) = {
+  if rate >= threshold { ok-color }
+  else if rate >= threshold * 0.6 { mid-color }
+  else { bad-color }
+}
+
+#let badge(label, color) = box(
+  fill: color.lighten(82%),
+  radius: 3pt,
+  inset: (x: 4pt, y: 2pt),
+)[#text(size: 0.7em, weight: "bold", fill: color.darken(12%))[#label]]
+
+#let bar(rate, color: accent, width: 2.4cm) = {
+  let r = calc.max(0.0, calc.min(1.0, rate))
+  box(baseline: 0.15em)[
+    #stack(
+      dir: ltr,
+      box(width: width * r, height: 0.58em, fill: color, radius: (left: 2pt)),
+      box(width: width * (1.0 - r), height: 0.58em, fill: luma(232), radius: (right: 2pt)),
+    )
+  ]
+}
+
+#let stat-card(label, value, note: none) = block(
+  width: 100%,
+  fill: luma(247),
+  radius: 4pt,
+  inset: (x: 9pt, y: 8pt),
+)[
+  #text(size: 0.74em, fill: luma(95))[#upper(label)]
+  #v(0.12em)
+  #text(size: 1.35em, weight: "bold", fill: accent)[#value]
+  #if note != none [
+    #v(0.08em)
+    #text(size: 0.76em, fill: luma(95))[#note]
+  ]
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Heading and headline numbers
+// ─────────────────────────────────────────────────────────────────────────────
+
+#block(below: 1em)[
+  #text(size: 1.5em, weight: "bold")[#cb-meta.assessment.title — class diagnostic]
+  #linebreak()
+  #text(size: 0.95em, fill: luma(110))[
+    #cb-meta.course.code · #cb-meta.course.term
+    #{
+      let date = cb-meta.assessment.at("date", default: none)
+      if date != none [ · administered #date ]
+    }
+  ]
+]
+
+#let dist = cb-data.distribution
+#let rel = cb-data.reliability
+
+#grid(
+  columns: (1fr, 1fr, 1fr, 1fr),
+  gutter: 9pt,
+  stat-card("students", str(cb-data.students), note: str(cb-data.items) + " scored items"),
+  stat-card("mean", str(calc.round(dist.mean)) + "%", note: "median " + str(calc.round(dist.median)) + "%"),
+  stat-card("spread", "SD " + num(dist.sd, digits: 1), note: str(calc.round(dist.min)) + "–" + str(calc.round(dist.max)) + "%"),
+  stat-card(
+    "reliability",
+    {
+      let alpha = rel.at("alpha", default: none)
+      if alpha != none { num(alpha) } else { "n/a" }
+    },
+    note: {
+      let sem = rel.at("sem", default: none)
+      if sem != none { "SEM " + num(sem, digits: 1) + " items" } else { "KR-20" }
+    },
+  ),
+)
+
+#v(0.6em)
+#text(size: 0.88em, fill: luma(90))[#rel.interpretation]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Distribution
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let bins = dist.at("bins", default: ())
+#let peak = if bins.len() > 0 { calc.max(..bins.map(b => b.count)) } else { 0 }
+
+#if peak > 0 [
+  = Score distribution
+
+  #let height = 3.2cm
+  #align(center)[
+    #grid(
+      columns: (1fr,) * bins.len(),
+      gutter: 5pt,
+      ..bins.map(b => {
+        let share = if peak > 0 { b.count / peak } else { 0.0 }
+        stack(
+          dir: ttb,
+          spacing: 3pt,
+          align(center + bottom)[
+            #box(height: height)[
+              #align(bottom)[
+                #box(
+                  width: 100%,
+                  height: height * share,
+                  fill: accent.lighten(if b.low >= 70 { 55% } else { 25% }),
+                  radius: (top: 2pt),
+                )
+              ]
+            ]
+          ],
+          align(center)[#text(size: 0.72em, weight: "bold")[#b.count]],
+          align(center)[#text(size: 0.68em, fill: luma(110))[#b.low]],
+        )
+      }),
+    )
+  ]
+  #align(center)[#text(size: 0.72em, fill: luma(120))[percent scored, in ten-point bins]]
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Forms
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let forms = cb-data.at("forms", default: ())
+
+#if forms.len() > 1 [
+  = Forms
+
+  #text(size: 0.9em, fill: luma(95))[
+    Forms differ only in order, so their means should differ only by who sat
+    them. A persistent gap points at an item whose permutation made it easier or
+    harder, and the per-question columns further down are where to look.
+  ]
+
+  #v(0.4em)
+
+  #table(
+    columns: (auto, auto, auto, auto),
+    stroke: none,
+    align: (left, right, right, right),
+    inset: (x: 7pt, y: 4pt),
+    fill: (_, row) => if calc.odd(row) { luma(250) } else { white },
+    table.header(
+      text(size: 0.78em, fill: luma(95))[FORM],
+      text(size: 0.78em, fill: luma(95))[STUDENTS],
+      text(size: 0.78em, fill: luma(95))[MEAN],
+      text(size: 0.78em, fill: luma(95))[SD],
+    ),
+    ..forms.map(form => (
+      [*#form.id*],
+      [#form.students],
+      [#num(form.mean, digits: 1)%],
+      [#num(form.sd, digits: 1)],
+    )).flatten(),
+  )
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Levels
+// ─────────────────────────────────────────────────────────────────────────────
+
+#if cb-data.levels.len() > 0 [
+  = By level
+
+  #table(
+    columns: (auto, auto, auto, 1fr),
+    stroke: none,
+    align: (left + horizon, right + horizon, right + horizon, left + horizon),
+    inset: (x: 7pt, y: 4pt),
+    fill: (_, row) => if calc.odd(row) { luma(250) } else { white },
+    table.header(
+      text(size: 0.78em, fill: luma(95))[LEVEL],
+      text(size: 0.78em, fill: luma(95))[ITEMS],
+      text(size: 0.78em, fill: luma(95))[CLASS],
+      text(size: 0.78em, fill: luma(95))[],
+    ),
+    ..cb-data.levels.map(level => (
+      [#level.level · *#level.name*],
+      [#level.items],
+      [#pct(level.rate)],
+      bar(level.rate, color: rate-color(level.rate), width: 5cm),
+    )).flatten(),
+  )
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Objectives
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let objectives = cb-data.at("objectives", default: ())
+
+#if objectives.len() > 0 [
+  = By objective, worst first
+
+  #text(size: 0.9em, fill: luma(95))[
+    The counts split the class into how many are meeting, developing, and not yet
+    on each objective. An objective where the class divides evenly is a different
+    teaching problem from one where nearly everyone is short.
+  ]
+
+  #v(0.4em)
+
+  #table(
+    columns: (1fr, auto, auto, auto, auto, auto, auto),
+    stroke: none,
+    align: (left + horizon, right + horizon, right + horizon, right + horizon, right + horizon, right + horizon, left + horizon),
+    inset: (x: 6pt, y: 4pt),
+    fill: (_, row) => if calc.odd(row) { luma(250) } else { white },
+    table.header(
+      text(size: 0.78em, fill: luma(95))[OBJECTIVE],
+      text(size: 0.78em, fill: luma(95))[Q],
+      text(size: 0.78em, fill: luma(95))[CLASS],
+      text(size: 0.78em, fill: luma(95))[MET],
+      text(size: 0.78em, fill: luma(95))[DEV],
+      text(size: 0.78em, fill: luma(95))[NOT],
+      text(size: 0.78em, fill: luma(95))[],
+    ),
+    ..objectives.map(objective => (
+      {
+        markup(objective.text)
+        if objective.at("below-threshold", default: false) {
+          [ #badge("below " + pct(threshold), bad-color)]
+        }
+      },
+      [#objective.items],
+      [#pct(objective.rate)],
+      [#objective.meeting],
+      [#objective.developing],
+      [#objective.at("not-yet", default: 0)],
+      bar(objective.rate, color: rate-color(objective.rate), width: 2.2cm),
+    )).flatten(),
+  )
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Items
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let questions = cb-data.at("questions", default: ())
+
+#if questions.len() > 0 [
+  #pagebreak(weak: true)
+  = Item analysis
+
+  #text(size: 0.9em, fill: luma(95))[
+    #emph[p] is the share answering correctly; #emph[r] is the corrected
+    item-total correlation, which should be positive and is the single most
+    useful column; #emph[D] is the upper group minus the lower group. Option
+    letters are the bank's, not any one form's.
+  ]
+
+  #v(0.4em)
+
+  #table(
+    columns: (auto, auto, auto, auto, auto, auto, 1fr),
+    stroke: none,
+    align: (right + horizon, right + horizon, right + horizon, right + horizon, right + horizon, right + horizon, left + horizon),
+    inset: (x: 5pt, y: 3.5pt),
+    fill: (_, row) => if calc.odd(row) { luma(250) } else { white },
+    table.header(
+      text(size: 0.78em, fill: luma(95))[Q],
+      text(size: 0.78em, fill: luma(95))[LVL],
+      text(size: 0.78em, fill: luma(95))[KEY],
+      text(size: 0.78em, fill: luma(95))[p],
+      text(size: 0.78em, fill: luma(95))[r],
+      text(size: 0.78em, fill: luma(95))[D],
+      text(size: 0.78em, fill: luma(95))[FLAGS],
+    ),
+    ..questions.map(q => (
+      [*#q.number*],
+      {
+        let level = q.at("level", default: none)
+        if level != none [#level] else []
+      },
+      [#q.at("key", default: ()).join("")],
+      text(fill: rate-color(q.p))[#num(q.p)],
+      {
+        let r = q.at("point-biserial", default: none)
+        if r == none { text(fill: luma(140))[n/a] }
+        else if r < 0.0 { text(fill: bad-color, weight: "bold")[#signed(r)] }
+        else if r < 0.15 { text(fill: mid-color)[#signed(r)] }
+        else { [#signed(r)] }
+      },
+      {
+        let d = q.at("discrimination", default: none)
+        if d != none [#signed(d)] else [—]
+      },
+      {
+        let flags = q.at("flags", default: ())
+        let forms-gap = {
+          let by-form = q.at("by-form", default: (:))
+          let values = by-form.values()
+          if values.len() > 1 and calc.max(..values) - calc.min(..values) >= 0.25 {
+            (badge("form gap " + pct(calc.max(..values) - calc.min(..values)), mid-color),)
+          } else { () }
+        }
+        stack(
+          dir: ltr,
+          spacing: 3pt,
+          ..flags.map(f => badge(f, bad-color)),
+          ..forms-gap,
+        )
+      },
+    )).flatten(),
+  )
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// The revise queue
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let revise = cb-data.at("revise", default: ())
+
+#if revise.len() > 0 [
+  = Before you use these again
+
+  #for q in revise [
+    #block(breakable: false, above: 0.9em, width: 100%)[
+      #text(weight: "bold", fill: accent)[Question #q.number]
+      #{
+        let item = q.at("item", default: none)
+        if item != none [ #text(size: 0.8em, fill: luma(120))[#item]]
+      }
+      #h(0.5em)
+      #stack(dir: ltr, spacing: 3pt, ..q.at("flags", default: ()).map(f => badge(f, bad-color)))
+
+      #v(0.25em)
+      #for note in q.at("notes", default: ()) [
+        #text(size: 0.9em)[— #markup(note)]
+        #linebreak()
+      ]
+
+      #if show-options and q.at("options", default: ()).len() > 0 [
+        #v(0.3em)
+        #table(
+          columns: (auto, auto, auto, auto, 1fr),
+          stroke: none,
+          align: (center + horizon, right + horizon, right + horizon, left + horizon, left + horizon),
+          inset: (x: 5pt, y: 3pt),
+          table.header(
+            text(size: 0.74em, fill: luma(95))[OPT],
+            text(size: 0.74em, fill: luma(95))[n],
+            text(size: 0.74em, fill: luma(95))[SHARE],
+            text(size: 0.74em, fill: luma(95))[],
+            text(size: 0.74em, fill: luma(95))[r],
+          ),
+          ..q.options.map(option => (
+            {
+              if option.at("is-key", default: false) {
+                text(weight: "bold", fill: ok-color)[#option.letter]
+              } else { [#option.letter] }
+            },
+            [#option.count],
+            [#pct(option.rate)],
+            bar(
+              option.rate,
+              color: if option.at("is-key", default: false) { ok-color } else { luma(160) },
+              width: 2.6cm,
+            ),
+            {
+              let r = option.at("point-biserial", default: none)
+              if r == none { text(fill: luma(150))[—] }
+              else if not option.at("is-key", default: false) and r > 0.0 {
+                text(fill: mid-color)[#signed(r)]
+              } else { text(size: 0.95em)[#signed(r)] }
+            },
+          )).flatten(),
+        )
+      ]
+    ]
+  ]
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Blueprint and cautions
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let blueprint = cb-data.at("blueprint", default: ())
+#let warnings = cb-data.at("warnings", default: ())
+#let patterns = cb-data.at("patterns", default: ())
+
+#if patterns.len() > 0 [
+  = Response profiles
+
+  #for pattern in patterns [
+    - *#pattern.label* — #pattern.students student(s)
+  ]
+]
+
+#if blueprint.len() > 0 [
+  = Where the form differs from its blueprint
+
+  #for line in blueprint [
+    - #line
+  ]
+]
+
+#if warnings.len() > 0 [
+  = Cautions
+
+  #for line in warnings [
+    - #text(size: 0.9em)[#line]
+  ]
+]
+
+#v(1.2em)
+#line(length: 100%, stroke: 0.5pt + luma(210))
+#v(0.4em)
+#text(size: 0.76em, fill: luma(120))[
+  Generated #cb-meta.generator.on by #cb-meta.generator.tool #cb-meta.generator.version.
+  With #cb-data.students students, an item statistic has a standard error of
+  roughly 0.2; treat single-item results as provisional and the pattern across
+  items as real. Instructor copy — the option tables identify the key.
+]

src/export/typst/templates/student-report.typ

@@ -0,0 +1,552 @@
+// coursebank — individual diagnostic template
+//
+// This file is a template, not generated output. `coursebank report students`
+// replaces only the marked regions below and leaves every other line exactly as
+// you wrote it, so this is where layout decisions belong.
+//
+//   coursebank template dump --variant student-report
+//   typst watch templates/student-report.typ
+//
+// Two markers are in play:
+//
+//   // coursebank:begin meta     course, assessment, class size, policy
+//   // coursebank:end meta
+//   // coursebank:begin data     one student's diagnostic
+//   // coursebank:end data
+//
+// Both regions ship with sample values, so `typst watch` works before any report
+// has been generated.
+//
+// What is not in the payload: the questions. There is no stem field and no option
+// text field, on any question, in any configuration. A student report is handed
+// back before the makeup exam is given, and a report that reproduces the paper
+// cannot be. If you find yourself wanting to print the question, print its number
+// and let the student read it off their own copy.
+
+#import "@preview/mitex:0.2.7": mi
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Data
+// ─────────────────────────────────────────────────────────────────────────────
+
+// coursebank:begin meta
+#let cb-meta = (
+  course: (code: "COURSE 101", title: "Sample Course", term: "2026f"),
+  assessment: (id: "sample", title: "Sample assessment", date: "2026-01-01"),
+  generator: (tool: "coursebank", version: "0.0.0", on: "2026-01-02"),
+  policy: (mastery-threshold: 0.75, min-items-for-mastery: 2),
+  class-size: 24,
+  extra: (:),
+)
+// coursebank:end meta
+
+// coursebank:begin data
+#let cb-data = (
+  student-key: "s-000000000000",
+  name: "Sample Student",
+  form: "A",
+  score: (points: 27.0, possible: 36.0, percent: 75.0, bonus: 1.0, correct: 27, items: 36),
+  standing: (class-mean: 71.2, class-sd: 11.4, band: "upper half"),
+  levels: (
+    (level: 1, name: "Remember", blurb: "recalling terms, facts, and definitions",
+     items: 6, rate: 1.0, class-rate: 0.91, comparison: "above the class"),
+    (level: 3, name: "Apply", blurb: "using a procedure in a new situation",
+     items: 9, rate: 0.56, class-rate: 0.64, comparison: "below the class"),
+  ),
+  objectives: (
+    (id: "lo-sample-met", text: [A sample objective this student met.], items: 3,
+     credit: 3.0, rate: 1.0, lower: 0.44, upper: 1.0, class-rate: 0.81,
+     status: "meeting", symbol: "✓", confident: false, thin-evidence: false, levels: (1, 2)),
+    (id: "lo-sample-gap", text: [A sample objective to work on.], items: 3,
+     credit: 1.0, rate: 0.33, lower: 0.06, upper: 0.79, class-rate: 0.58,
+     status: "not yet", symbol: "✗", confident: false, thin-evidence: false, levels: (3,)),
+  ),
+  strengths: ((id: "lo-sample-met", text: [A sample objective this student met.], rate: 1.0, items: 3),),
+  focus: ((id: "lo-sample-gap", text: [A sample objective to work on.], rate: 0.33, items: 3),),
+  questions: (
+    (number: 1, level: 1, objectives: ("lo-sample-met",), correct: true, credit: 1.0,
+     bonus: false, blank: false, class-rate: 0.91, taught-in: ()),
+    (number: 2, level: 3, objectives: ("lo-sample-gap",), correct: false, credit: 0.0,
+     bonus: false, blank: false, class-rate: 0.58,
+     feedback: [This is the note written for the option that was chosen.],
+     taught-in: ("Enthalpy (L1.1), slides 12, 13",)),
+  ),
+  study: (
+    (objective: "lo-sample-gap", text: [A sample objective to work on.], rate: 0.33,
+     readings: (
+       (citation: "KKW §6.2", lecture: "L1.1", lecture-title: "Enthalpy",
+        focus: [What to take from this section.], supplemental: false),
+     )),
+  ),
+)
+// coursebank:end data
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Settings
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let extra = cb-meta.at("extra", default: (:))
+#let accent = rgb(extra.at("accent", default: "#1f4e79"))
+#let body-font = extra.at("font", default: "Roboto")
+#let body-size = eval(extra.at("font-size", default: "10pt"))
+#let paper = extra.at("paper", default: "us-letter")
+
+// Turn sections off from templates/typst.yaml rather than by deleting code, so
+// a course that does not want the question map keeps the rest of this file.
+#let show-question-map = extra.at("question-map", default: true)
+#let show-feedback = extra.at("feedback", default: true)
+#let show-study = extra.at("study-plan", default: true)
+#let show-comparison = extra.at("comparison", default: true)
+
+#let threshold = cb-meta.policy.at("mastery-threshold", default: 0.75)
+
+#let ok-color = rgb("#2a9d8f")
+#let mid-color = rgb("#D19F1F")
+#let bad-color = rgb("#E24E29")
+#let thin-color = luma(150)
+
+#set page(
+  paper: paper,
+  margin: (x: 1.9cm, y: 2.1cm),
+  header: text(size: 0.8em, fill: luma(110))[
+    #cb-meta.course.code · #cb-meta.assessment.title · individual diagnostic
+  ],
+  footer: context text(size: 0.8em, fill: luma(110))[
+    #h(1fr)
+    Page #counter(page).display("1 of 1", both: true)
+  ],
+)
+#set text(font: body-font, size: body-size, lang: "en")
+#set par(justify: false, leading: 0.62em)
+#show heading.where(level: 1): it => block(above: 1.4em, below: 0.7em)[
+  #text(size: 1.15em, weight: "bold", fill: accent)[#it.body]
+  #v(-0.45em)
+  #line(length: 100%, stroke: 0.6pt + accent.lighten(55%))
+]
+#show heading.where(level: 2): it => block(above: 1em, below: 0.45em)[
+  #text(size: 1.02em, weight: "bold")[#it.body]
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Helpers
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let markup(v) = if type(v) == str { eval(v, mode: "markup") } else { v }
+
+// A rate is a fraction in 0..1; a percent is already out of 100. Keeping the two
+// straight is the only arithmetic this template does.
+#let pct(rate) = str(calc.round(rate * 100)) + "%"
+#let pct1(value) = str(calc.round(value, digits: 0)) + "%"
+
+#let status-color(status) = {
+  if status == "meeting" { ok-color }
+  else if status == "developing" { mid-color }
+  else if status == "not yet" { bad-color }
+  else { thin-color }
+}
+
+#let rate-color(rate) = {
+  if rate >= threshold { ok-color }
+  else if rate >= threshold * 0.6 { mid-color }
+  else { bad-color }
+}
+
+#let badge(label, color) = box(
+  fill: color.lighten(82%),
+  radius: 3pt,
+  inset: (x: 5pt, y: 2.5pt),
+)[#text(size: 0.72em, weight: "bold", fill: color.darken(12%))[#label]]
+
+// Two boxes side by side rather than an overlay: no `place`, no coordinate
+// arithmetic, and it degrades to something sensible at any width.
+#let bar(rate, color: accent, width: 3.6cm) = {
+  let r = calc.max(0.0, calc.min(1.0, rate))
+  box(baseline: 0.15em)[
+    #stack(
+      dir: ltr,
+      box(width: width * r, height: 0.62em, fill: color, radius: (left: 2pt)),
+      box(width: width * (1.0 - r), height: 0.62em, fill: luma(232), radius: (right: 2pt)),
+    )
+  ]
+}
+
+#let stat-card(label, value, note: none) = block(
+  width: 100%,
+  fill: luma(247),
+  radius: 4pt,
+  inset: (x: 10pt, y: 9pt),
+)[
+  #text(size: 0.75em, fill: luma(95))[#upper(label)]
+  #v(0.15em)
+  #text(size: 1.45em, weight: "bold", fill: accent)[#value]
+  #if note != none [
+    #v(0.1em)
+    #text(size: 0.78em, fill: luma(95))[#note]
+  ]
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Heading
+// ─────────────────────────────────────────────────────────────────────────────
+
+#block(below: 0.6em)[
+  #text(size: 1.5em, weight: "bold")[#cb-meta.assessment.title]
+  #h(0.6em)
+  #text(size: 1em, fill: luma(110))[
+    #cb-meta.course.code — #cb-meta.course.title
+  ]
+]
+
+#block(below: 1.2em)[
+  #text(size: 0.95em)[
+    *#cb-data.at("name", default: cb-data.student-key)*
+    #{
+      let sid = cb-data.at("sid", default: none)
+      if sid != none [ · #sid ]
+    }
+    #{
+      let form = cb-data.at("form", default: none)
+      if form != none [ · Form #form ]
+    }
+    #{
+      let date = cb-meta.assessment.at("date", default: none)
+      if date != none [ · #date ]
+    }
+  ]
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Score
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let score = cb-data.score
+#let standing = cb-data.at("standing", default: none)
+
+#grid(
+  columns: (1fr, 1fr, 1fr),
+  gutter: 10pt,
+  stat-card(
+    "score",
+    pct1(score.percent),
+    note: str(score.points) + " of " + str(score.possible) + " points"
+      + (if score.at("bonus", default: 0.0) > 0.0 { " (+" + str(score.bonus) + " bonus)" } else { "" }),
+  ),
+  stat-card(
+    "questions",
+    str(score.correct) + " / " + str(score.items),
+    note: "answered correctly",
+  ),
+  if standing != none and show-comparison {
+    stat-card(
+      "class",
+      pct1(standing.class-mean),
+      note: "class average · you are in the " + standing.band,
+    )
+  } else {
+    stat-card("class size", str(cb-meta.at("class-size", default: 0)), note: "students")
+  },
+)
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Levels
+// ─────────────────────────────────────────────────────────────────────────────
+
+#if cb-data.levels.len() > 0 [
+  = How you did, by kind of thinking
+
+  #text(size: 0.9em, fill: luma(95))[
+    Questions are written at levels. Scoring well on recall and less well on
+    application is a different problem from scoring evenly and low, and it has a
+    different fix.
+  ]
+
+  #v(0.5em)
+
+  #table(
+    columns: (auto, 1fr, auto, auto, auto),
+    stroke: none,
+    align: (left + horizon, left + horizon, left + horizon, right + horizon, left + horizon),
+    inset: (x: 5pt, y: 5pt),
+    fill: (_, row) => if calc.odd(row) { luma(250) } else { white },
+    table.header(
+      text(size: 0.78em, fill: luma(95))[LEVEL],
+      text(size: 0.78em, fill: luma(95))[WHAT IT ASKS],
+      text(size: 0.78em, fill: luma(95))[YOU],
+      text(size: 0.78em, fill: luma(95))[],
+      text(size: 0.78em, fill: luma(95))[CLASS],
+    ),
+    ..cb-data.levels.map(level => (
+      [*#level.name*  #text(size: 0.8em, fill: luma(120))[(#level.items)]],
+      text(size: 0.85em, fill: luma(80))[#level.blurb],
+      bar(level.rate, color: rate-color(level.rate), width: 2.6cm),
+      [#pct(level.rate)],
+      {
+        let class-rate = level.at("class-rate", default: none)
+        if class-rate != none and show-comparison {
+          text(size: 0.85em, fill: luma(100))[#pct(class-rate)]
+        } else { [] }
+      },
+    )).flatten(),
+  )
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Objectives
+// ─────────────────────────────────────────────────────────────────────────────
+
+#if cb-data.objectives.len() > 0 [
+  = What you have learned, objective by objective
+
+  #text(size: 0.9em, fill: luma(95))[
+    Each line is one thing the course asked you to be able to do, and how many
+    questions measured it. Two or three questions is thin evidence, so treat a
+    single line as a hint rather than a verdict; the pattern across lines is what
+    to trust.
+  ]
+
+  #v(0.5em)
+
+  #table(
+    columns: (auto, 1fr, auto, auto, auto),
+    stroke: none,
+    align: (center + horizon, left + horizon, center + horizon, left + horizon, right + horizon),
+    inset: (x: 5pt, y: 5pt),
+    fill: (_, row) => if calc.odd(row) { luma(250) } else { white },
+    table.header(
+      text(size: 0.78em, fill: luma(95))[],
+      text(size: 0.78em, fill: luma(95))[OBJECTIVE],
+      text(size: 0.78em, fill: luma(95))[Q],
+      text(size: 0.78em, fill: luma(95))[YOU],
+      text(size: 0.78em, fill: luma(95))[CLASS],
+    ),
+    ..cb-data.objectives.map(objective => (
+      text(fill: status-color(objective.status), weight: "bold")[#objective.symbol],
+      {
+        markup(objective.text)
+        if objective.at("thin-evidence", default: false) {
+          [ #badge("too few questions to say", thin-color)]
+        }
+      },
+      text(size: 0.85em, fill: luma(110))[#objective.items],
+      {
+        stack(
+          dir: ltr,
+          spacing: 5pt,
+          bar(objective.rate, color: status-color(objective.status), width: 2.1cm),
+          text(size: 0.9em)[#pct(objective.rate)],
+        )
+      },
+      {
+        let class-rate = objective.at("class-rate", default: none)
+        if class-rate != none and show-comparison {
+          text(size: 0.85em, fill: luma(100))[#pct(class-rate)]
+        } else { [] }
+      },
+    )).flatten(),
+  )
+
+  #v(0.4em)
+  #text(size: 0.78em, fill: luma(110))[
+    #text(fill: ok-color, weight: "bold")[✓] meeting · #text(fill: mid-color, weight: "bold")[~]
+    developing · #text(fill: bad-color, weight: "bold")[✗] not yet ·
+    #text(fill: thin-color, weight: "bold")[?] not enough evidence. The line is
+    drawn at #pct(threshold).
+  ]
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Strengths and focus
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let strengths = cb-data.at("strengths", default: ())
+#let focus = cb-data.at("focus", default: ())
+
+#if strengths.len() > 0 or focus.len() > 0 [
+  = Where to put your time
+
+  #grid(
+    columns: (1fr, 1fr),
+    gutter: 12pt,
+    if focus.len() > 0 {
+      block(
+        width: 100%,
+        fill: bad-color.lighten(93%),
+        radius: 4pt,
+        inset: 10pt,
+      )[
+        #text(weight: "bold", fill: bad-color.darken(15%))[Work on these first]
+        #v(0.35em)
+        #for objective in focus [
+          - #markup(objective.text)
+            #text(size: 0.8em, fill: luma(110))[ (#pct(objective.rate) of #objective.items)]
+        ]
+      ]
+    } else { [] },
+    if strengths.len() > 0 {
+      block(
+        width: 100%,
+        fill: ok-color.lighten(93%),
+        radius: 4pt,
+        inset: 10pt,
+      )[
+        #text(weight: "bold", fill: ok-color.darken(18%))[Solid, keep it]
+        #v(0.35em)
+        #for objective in strengths [
+          - #markup(objective.text)
+        ]
+      ]
+    } else { [] },
+  )
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Study plan
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let study = cb-data.at("study", default: ())
+
+#if show-study and study.len() > 0 [
+  = What to read
+
+  #text(size: 0.9em, fill: luma(95))[
+    These are the sections behind the objectives above, taken from the course
+    reading list rather than chosen generically.
+  ]
+
+  #v(0.4em)
+
+  #for group in study [
+    #block(breakable: false, above: 0.8em)[
+      == #markup(group.text)
+
+      #for reading in group.readings [
+        #block(inset: (left: 0.8em), above: 0.35em)[
+          #{
+            let url = reading.at("url", default: none)
+            let cite = text(weight: "bold")[#reading.citation]
+            if url != none { link(url)[#cite] } else { cite }
+          }
+          #text(size: 0.85em, fill: luma(110))[
+            — #reading.lecture-title (#reading.lecture)#{
+              if reading.at("supplemental", default: false) { ", supplemental" }
+            }
+          ]
+          #{
+            let focus-note = reading.at("focus", default: none)
+            if focus-note != none [
+              \ #text(size: 0.9em)[#markup(focus-note)]
+            ]
+          }
+        ]
+      ]
+    ]
+  ]
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Question map
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let questions = cb-data.at("questions", default: ())
+
+#let question-box(q) = {
+  let color = if q.at("blank", default: false) { luma(160) }
+    else if q.at("correct", default: false) == true { ok-color }
+    else if q.at("credit", default: 0.0) > 0.0 { mid-color }
+    else { bad-color }
+  box(
+    width: 100%,
+    fill: color.lighten(85%),
+    stroke: 0.5pt + color.lighten(45%),
+    radius: 3pt,
+    inset: (x: 2pt, y: 4pt),
+  )[
+    #align(center)[
+      #text(size: 0.85em, weight: "bold", fill: color.darken(18%))[#q.number]
+      #{
+        let level = q.at("level", default: none)
+        if level != none {
+          linebreak()
+          text(size: 0.62em, fill: luma(110))[L#level]
+        }
+      }
+    ]
+  ]
+}
+
+#if show-question-map and questions.len() > 0 [
+  = Question by question
+
+  #text(size: 0.9em, fill: luma(95))[
+    Numbers refer to your own copy of the exam. The questions themselves are not
+    reproduced here.
+  ]
+
+  #v(0.5em)
+
+  #grid(
+    columns: (1fr,) * 10,
+    gutter: 4pt,
+    ..questions.map(question-box),
+  )
+
+  #v(0.5em)
+  #text(size: 0.78em, fill: luma(110))[
+    #box(width: 0.7em, height: 0.7em, fill: ok-color.lighten(70%), radius: 2pt) correct ·
+    #box(width: 0.7em, height: 0.7em, fill: mid-color.lighten(70%), radius: 2pt) partial ·
+    #box(width: 0.7em, height: 0.7em, fill: bad-color.lighten(70%), radius: 2pt) incorrect ·
+    #box(width: 0.7em, height: 0.7em, fill: luma(210), radius: 2pt) blank
+  ]
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Notes on what was missed
+// ─────────────────────────────────────────────────────────────────────────────
+
+#let missed = questions.filter(q =>
+  q.at("credit", default: 0.0) < 0.999 and q.at("feedback", default: none) != none
+)
+
+#if show-feedback and missed.len() > 0 [
+  = Notes on the ones you missed
+
+  #text(size: 0.9em, fill: luma(95))[
+    Each note is written for the specific option you chose, so it names the idea
+    behind that answer rather than restating the right one.
+  ]
+
+  #v(0.5em)
+
+  #for q in missed [
+    #block(breakable: false, above: 0.7em, width: 100%)[
+      #grid(
+        columns: (2.6em, 1fr),
+        gutter: 6pt,
+        align(top)[#text(weight: "bold", fill: accent)[#q.number.]],
+        [
+          #markup(q.feedback)
+          #{
+            let taught = q.at("taught-in", default: ())
+            if taught.len() > 0 [
+              \ #text(size: 0.82em, fill: luma(110))[Covered in: #taught.join("; ")]
+            ]
+          }
+        ],
+      )
+    ]
+  ]
+]
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Footer note
+// ─────────────────────────────────────────────────────────────────────────────
+
+#v(1.2em)
+#line(length: 100%, stroke: 0.5pt + luma(210))
+#v(0.4em)
+#text(size: 0.76em, fill: luma(120))[
+  Generated #cb-meta.generator.on by #cb-meta.generator.tool #cb-meta.generator.version
+  from #cb-meta.at("class-size", default: 0) student(s). Percentages on a handful of
+  questions carry wide uncertainty; bring this to office hours rather than reading
+  it as a verdict.
+]