Post-Lesson (dashboard)

The heart of the product: after a lesson, open its full analysis view.

Access steps: select the class (Class selector) → Course button → calendar → day → Open this lesson →. (Via URL: /dashboard?class=1&session=1.)

1. Metrics row (class or student)

Each metric has a “?”: hover → explanation; click → detailed page [new tab]. Every label is defined and computed in Metrics — full reference:

• Engagement · Sustained attention · On-task · Attention shifts
• Drift · Recovery (windows) · Flagged

2. Engagement chart (class timeline)

• X axis: lesson minutes; Y axis: score 0–10.
• Segment colors according to the engagement level of the point.
• Clicking a student reloads the timeline for them, otherwise it is the class average.

3. Students table

• Primary state: level badge (colors active/quiet/passive/bored/frustrated).
• Engagement: 0–100 % colored bar.
• Trend: ▲▲▲ / ▲ / → / ▼ / ▼▼▼ = comparison of the current lesson with the 5 previous ones (diff ≥ 0.6 /10 = triple arrow; ≥ 0.2 = single arrow).
• Flag: — / ⚠ / 🚨.

4. Student panel (profile)

Clicking a row opens the profile on the right.

Domains

Attention metrics — 6 phase-1 tiles: On-task, Shifts, Drift, Recovery, Episodes, Yawns. Cumulative record — the last 5 lessons (date, subject, level bar, score).

Advisory / Priority: interpretation box (green = nothing to do, orange = suggested action, red = immediate priority). Tomorrow's recommendation: dark box with the recommended action.

Profile actions: + Save to plan (→ Follow-Up), 🎯 Generate IEP (individual plan), ✉ Parent report, ↓ Full report (PDF).

5. Watching the video

▶ Watch video (VideoPlayerModal): video with HTTP Range, student list, and a synchronized timeline — when the cursor moves, the timeline follows; selecting a student filters their curve.

Shortcuts & persistence

• The class/lesson selection is remembered (localStorage) and restored on reload.
• The status of a processing lesson refreshes every 10 s (polling “Processing… x %”).