Also these are most likely the first classes. You can not block most of your entering cohort. Or even any way significant part. At least in the system these professors exist in. In some other systems like say German where getting in easy and getting rid of some is normal would be different.

This shouldn't be a hard problem to solve. At the state university I'm most familiar with, every incoming Freshman takes a math assessment test. If they don't pass it, they have to take remadial coursework (which does not count towards their degree requirements).

And yes, every student takes it, even the ones with high school AP math and high SAT math scores. The only exception might be if they have already completed and passed actual accredited university math courses for credit.

Do they not have remedial classes for these students? It's been more than 20 years, but back in my day, if you weren't ready for entry level classes (but still got in to university) you took remedial classes first.

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