Examinator 🧐

Published:

Examinator is a secret tool that I built to detect cheating in online exams and homework at scale for large courses with 1000+ students 😉. I built it by reverse engineering Canvas New Quizzes network traffic to scrape students responses as well as activity timestamps.

  • During Fall 2023, we caught 3.5% (35 out of 1000) students.
  • During Spring 2023, we caught 5% (~70 out of 1300) students.
  • During Fall 2022, we caught 13% (11 out of 82) students cheating in the midterm and final exam of an in-person undergraduate CS course.
  • During 2021, we caught 20 students cheating in the midterm and final exam of a graduate CS course.

We have a paper published Examinator v3.0: Cheating Detection in Online Take-Home Exams, Examinator v4.0 : Cheating Detection in Online Take-Home Exams, and a patent pending.

Examinator started as a research project at Georgia Tech since 2021.

We are still actively iterating on the project and expanding

Examinator Activities Timestamp Chart