The Magicians books, or at least the first one, did go into quite a lot of detail about life at a magical college. It came off rather grim and cheerless. The series leaves the school behind pretty quickly, but they make the urgency of defeating the Big Bad part of the reasoning for it. There's a lot of ironic distancing from the magical otherworld in both books and series. The series is more blatantly campy about it.

Buffy had a few good episodes about college early on-there was an actual demon roommate, haunted frat parties, some shitty freshman hazing, and of course the professor who turns out to be a secondary Big Bad-- but then life intervened. I didn't mind that so much--it was at that point less about college as such than making the slow turn into adulthood.