LambdaGrader

Bubble-sheet grading that never leaves your browser

Exam settings

Each text has a color and a font size in points (blank = default; long text wraps or shrinks to fit). To color just part of a text, write {red|word} or {#1a56db|word} (red, orange, green, blue, purple, gray, or a hex code).

How it works

  1. Students: import or type your roster of name.# IDs (up to 400).
  2. Answer key: type the key as plain text, e.g. 1. B, or 2. ACD for select all that apply.
  3. Bubble sheets: print blank sheets, or personalised sheets with each student's name and name.# pre-filled.
  4. Scan & grade: scan the completed sheets to a PDF (150 dpi or better) and drop it in.
  5. Results: review flagged sheets, then download the CSV.

🔒 Everything (roster, keys, scans, scores) stays on this computer, in this browser. No data is uploaded anywhere. Use Backup to move your data to another browser.

Data

Review

Click a bubble on the image, or below, to toggle it. Filled = read as marked (green if right), green ring = key, red ring = wrong, orange dot = check this question. A + after the number means select all that apply.