Quite a lot tbh, especially when compared to uni. I miss the fact that the teachers at my school genuinely cared (not all of them as some were **** but most). I had a really lovely history teacher who would let me go to him and speak to him about my nightmares on a friday. At university the tutors give no ****s about you at all.
Same with the students, at school i was never in a group as such but by the time of year 13 i was pretty well liked by people in my year and although i dindt have close friends i would say hi to pretty much everyone in my year when we passed in the corridors and i knew if i went in the common room i could easily find someone to chat to. At uni everyone is in cliques and unless you like drinking there is little opportunity to get to know people as all the socialising occurs in bars and pubs outside of lectures and uni time. Even if you join societies that's where most of their socials are held. There are housemates but it depends on the luck of the draw, my second year house was mostly alright and pretty social but am not sure anyone even knew i existed in first year. It gets pretty lonely and unlike at school you cant just go home at the end of the day and see your mum who will cook you a nice dinner and you can have a nice talk to.
I also like the curriculum diversity in school, i dont mind what im doing now but it gets boring quite quickly as everything is relatively the same from project to project. At school especially lower down i loved the fact you could go from doing history to doing art to doing english. Even in classes i didnt like such as spanish at GCSE, noone else liked it either so there was sort of this camaraderie bond of we are all in this crap together.
I felt like i achieved well at school, i was in a grammar and pretty high up within the sets etc. I feel like i peaked at school as i came out with 9A*s and 8As in total across GCSE, AS and Alevel whereas now i feel like im just getting by and going through the motions just to get a good job without any real enjoyment. I took the subject that had the most interest for me whilst being at least vaguely employable so i doubt i would have been any happier doing something else, it's not really the subject it's just the doing the same sort of area every day is pretty boring to me. I just liked that variation of the KS3 timetable, maybe im a jack of all trades master of none.