From the numerous stories I have heard on here and other platforms, that would absolutely be a very effective method because the students who are cheating using AI will 100% absolutely not check to make sure they won't get caught. Why would they bother when they already don't care to begin with?
Wife does this for her highschool students. They never notice that their papers always mention a unicorn. They still can't figure why they always get caught. Neigh 🦄
I have friends who teach college and we were joking that they should have AI grade all the papers including a rationale for the grade and if students don’t like their grade they have to argue against the AI’s rationale out loud to the professor.