Not school generally, but definitely university. Turns out giving an 18 year old total agency with very little accountability doesn't really set you up for success. I got through (mostly because a close friend kicked my ass), but was a terrible student and am still filling in gaps in my skills a decade later
I'm an August baby so was the youngest of my cohort going into uni and while I've done ok I do wonder if I'd have done a bit better academically if I hadn't been so distracted by all the other things on offer to a independent 18 year old.