Hey, check this out
Garry is working on Overlay! 2026-05-20
Grade paper quizzes in seconds, not evenings.
Snap a photo of your answer key. Snap photos of your students' papers. ChaCha reads each one with AI, scores them, and shows you every student's answer to the same question side-by-side so you can review and adjust in one pass.
No student data stored. You review, you export, it's gone.
How it works
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1
Photograph the answer key
Fill in your quiz the way a perfect student would. Take a picture. ChaCha pulls out the questions and the correct answers — multiple choice, true/false, and short answer.
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2
Mark each question's region
Drag a box around each question on the answer-key image. Those regions tell ChaCha where to look on every student paper.
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3
Photograph the stack
One photo per student paper. Thirty papers grade in a few seconds — every page is read in parallel.
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4
Review & adjust
See every student's answer to Q1 side-by-side. Disagree with the AI? Click to flip correct/incorrect. Move on to Q2.
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5
Export the report & you're done
Download a detailed report with per-student scores and per-question breakdowns. The student images and answers are not retained.
Privacy first
We don't store student data
Student papers and the AI's reading of them live only for the length of your grading session. When you export the report, the working data is discarded.
You own the report
The detailed report is yours to download and keep wherever your school requires. ChaCha doesn't hold onto it after you leave.
No accounts for students
Only the teacher signs in. Students never appear in any database — they're just names on papers in your classroom.