Hated it. I liked primary (elementary) school but hated high school. I was an awkward spotty goth kid and got bullied. Such nice children turn into complete assholes once they hit puberty. Some of the kids I considered friends in primary school started bullying me.
By the end of high school, I made some true friends, though. They were the only ones who kept me sane there.
A good few of my lessons consisted of some kid being cheeky to a teacher and the teacher basically having a meltdown. My one Welsh teacher would always go storming off for 10 minutes looking for the head of year to give us a row.
My high school was in an old Welsh castle, though. That was cool. It reminded me of Hogwarts.