I also went to university 20 years ago, and don't really remember challenging professors or other classmates. You largely showed up to the huge lectures, turne

I also went to university 20 years ago, and don't really remember challenging professors or other classmates. You largely showed up to the huge lectures, turned in your solved problems, and took exams. The oddest experience I remember having was that we used US units in the thermodynamics class, which was a first for me (high school science was all metric). I also paid $750/semester because it was a state school and I was a resident. I really don't understand what people think goes on at universities. Sure, some students in their personal time have controversial takes on things. The vast majority of students are just doing their coursework, though. (And things are probably different if you are going for a more liberal arts-y education instead of a state-school engineering degree.)