When I was in MS and HS, everyone cared how they dressed. Granted, was that an Eddie Bauer unbuttoned flannel? Sure.
In college I definitely noticed a change in my last 2 years, that carried over to the following couple years. The fun part was all of the sorority girls that got up at 5 am to do their hair, and makeup, and put on a pair of $200 pajamas to go to class. They didn't look homely. They looked like they were trying very hard to look like they didn't try at all.
I noticed a slight shift back to dressing up a little more, that I think went away post pandemic.
My oldest is now in MS, and while the boys still dress like shit, I've noticed the girls starting to dress up more for school again. Granted the girl his age that lives around the corner from us is also out taking selfies against the sunrise when I'm walking the dog at 6:45 am, and that's the most old man I feel, is wondering WTF she is doing. If she wants to be out that early, I'll pay her to walk the dog