I always enjoy reading about other people's HS experiences, probably because mine was so atypical. My school was affiliated with the church my family belonged to at the time, and it was small. Like, about 50 people K-12 small. There were six of us in my graduating class and I'm pretty sure that was the largest class in the school's history. Graduating classes of 1 were not uncommon.
Despite the size we still had the usual archetypal characters, I guess. We had a gay dude (came out after HS, obviously), a black guy, a slut, a couple jocks, some gang-bangers (not that kind). Obviously those cliques overlapped. The gay dude would get called a fairy on the playground on Monday, then start at center on the basketball team on Friday. I played sports but got labeled as weird for being a music obsessive and doing a lot of creative writing. The worst I can say for myself is that it was awkward at times. Nothing unusually traumatic happened. The after effects of the religious aspect were harder to overcome than the social aspect.
Obviously being a straight white male didn't hurt. I think it was a lot harder for the girls (our church had Taliban-esque rules regarding dress) and our gay classmate.
The school opened the year I was born and closed a few years after I graduated. I attended all 13 years, K-12. I keep in touch with two of my classmates regularly, and the rest just kinda float out there in the Facebook ether. There's talk of a reunion (encompassing the school's entire history) every few years, but it never goes anywhere. Half the people want to hold it at the church, the other half at a bar.