Lol, my mom was a teacher, my wife is a teacher, my sister is a teacher, my sister in law will be a teacher. For all I did tech support. Now what?
Actually I think this is a very nice simple solution. Under the circumstances that teachers like to use Google Forms and Google seems to shit on teachers with this use case, let the admin simply deactivate view source for Google Forms URLs and no problem any more. This will only affect student accounts, maybe even only student exam accounts and the problem is solved, especially in primary education.