Many teachers receive answer keys as a printed page, a textbook table or handwritten notes — not as a file. Typing 100 answers is slow and a typo ruins a whole test. ScanScore can read the key from a photo, and you check it before it is saved.


How it works

  1. Open the exam’s answer key in ScanScore (or on the exam page in the browser).
  2. Photograph the key — up to six pages at a time.
  3. The answers land in the key grid, and the app tells you how many it found.
  4. Check and correct them, then save.

What it needs

Reading a key from a photo runs on AI, so it needs a Pro plan and uses credits. Scanning and marking sheets never use credits. For a free route, use one of the other ways below.

Four ways to set a key

WayBest when
Tap the bubblesShort tests
Paste a letter stringYou already have the key as text
Scan a filled key sheetYou can fill a sheet yourself
Read from a photoThe key is on paper or in a book

See how to set an OMR answer key for all four.

Always check the result

  • Compare the count it found with your number of questions.
  • Spot-check the first, middle and last rows against the page.
  • Pay attention to handwriting — letters like B and D can be confused.
  • Keep a copy in the answer key template.

After saving

Once the key is complete you can scan. If you later find an error, change the key and ScanScore offers to re-mark saved sheets. See checking sheets fast and data privacy for OMR apps, which explains what leaves the phone when you use AI features.