Comment by john_strinlai

I know, but your comment also in no way implies that you are taking into account the bigger picture here, where the criticism is directed at the admissions process, and wherein universities are honestly at fault.

If university-level classes have pre-requisites that should be taught in high school, then universities should screen for that and disqualify students who do not have the required competency. They should not be taking the students' money, admit them in the institution, and then let them enroll in classes that they are not prepared to succeed in. That's outright extortion. Many of those students have to take on debt to pay for their education, and besides the financial cost, it's a waste of time, and their failures would be mentally crushing and have lifelong repercussions.

I sympathize with educators in that they cannot slow the whole class down, but that's the point: universities shouldn't be putting educators in a position to compromise the teaching. Meanwhile, educators also shouldn't accept that "pointing [students] in the right direction to get caught up" is enough, because objectively speaking, it's not---that is not how a student develops an understanding of maths and sciences. For the student, that requires a focused (and in many cases, guided) study of those subject areas and before university, without the stress of catching up to university-level courses that are already being taken at the same time.