Secondary school is high school right? Like ages 14-18, roughly? I just went to the local public high school. My town is too small to have our own, so it's in the next town over. Kind of a poor area, pretty lowly ranked, but I think things like that are what you make of it. I elected to take higher level classes which meant the teachers and other students were more engaged and the curriculum was harder, kept me away from a lot of the stuff you see in videos now of kids screaming and running around and fighting while the teacher just looks defeated.
I had no real problems in high school. Not the most popular kid but I was well-liked and had my friend group, some of whom I still keep in touch with, it's been about 10 years for me. I probably had a pretty standard experience as a bright kid going to school in a small, kinda run-down city. I wasn't going to parties every weekend and getting a ton of girls but it was a far cry from what some kids experience. One of my best friends at the time and still to this day was much more of a loner type in school and didn't care about his grades so he was in lower level classes with the troublemakers and never interacted with anyone no matter how hard I tried to get him into the groups I ran with. So he was miserable all 4 years. He's much better now but it just proved to me that you really have to take control of those situations for yourself.