Yeah bad choice of words on my part, I apologize. I can imagine that things are pretty chaotic right now and that there are quite a few problems like the one you describe. When I said I don't see a crisis here I meant that more in a more overarching sense and that I see this as solvable.

> Works for high school, not so much for university degrees.

I don't know about that. I can't speak for the US, but at the university where I got my degrees (Math & CS) and later worked prerequisite in-person tests to be allowed to take a given exam were not rare. Most modules had lectures (professor), tutorials (voluntary in-person bonus exercises and tutors to ask questions) and exercise groups where solutions to mandatory exercises were discussed. In the latter sometimes an additional part of the exam requirements was to present and explain a solution at least once or twice over the course of the semester. And some had small, mandatory bi-weekly tests as part of the requirement too.

Obviously I can understand that this would not work equally well in each kind of academic programme.