Second Bell
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Chrome extension

Better Feedback

AI-powered feedback drafting built directly into Canvas SpeedGrader. Get rubric-aware suggestions, batch-grade full rosters, and maintain complete control with review-before-apply guardrails.

In Canvas

Feedback that saves hours, teachers that stay in control.

  • Rubric-aware feedback drafts from assignment context
  • Review every suggestion before applying
  • Batch-grade full rosters with one-click workflow
  • Full cost visibility and prompt caching

Why it works

Feedback where it lives, guardrails where they matter.

Canvas-native

Works directly in SpeedGrader so teachers never leave their grading flow.

Rubric-aware

Reads assignment rubrics to generate feedback that matches your scoring criteria.

Review-before-apply

Every draft surfaces for human review. Accepting suggestions is conscious, not automatic.

Cost control

See the exact cost of every batch before grading. Prompt caching keeps fees predictable.

Batch-grade

Generate drafts for a full roster at once, then review and apply on your timeline.

Teacher voice

Feedback drafts in professional tone and length. Teachers edit, not just approve.

Designed for real grading workflows

This extension was built by a teacher. It assumes you grade dozens of assignments, have rubrics that matter, and need tools that respect your voice—not replace it.