Tool for schools to check if content was created with AI

Had this idea a while ago but forgot to submit it. How about a tool that teachers and professors can use to see if a student’s content was created with ChatGPT and/or a tool that lets a teacher submit previous content from a student and compare it to content they suspect may have been written with AI and ChatGPT can tell them how likely it was written with ChatGPT or another AI language model.

You just have to look for stupid and uncommon mistakes and inconsistencies. If you can’t do that yourself, then a tool to won’t help you either (because you will not be able to validate the results of that tool).