High School? Meh. It all depends on where you hang, who you hang with, what your teachers will be like, and what students are in the classes you get.
For me? I hung near the entrance of the school, since there were less crowds and more freedom to actually move around. I hung out with my friends from middle/elementary school, as they made high school a 'lot' more bearable! Teachers were pretty good overall, as they gave out cool assignments or actually knew what high school was like and didn't pile 80 hours of homework to do in one night. And the students in classes? That was the worst really. I ended up in the loud, sex-crazed, drug classes. It sucked horribly at that part.
So! Keep your great friends close, don't fall into a hell of a lot of high school temptations (Sex being the main one, really. Too much drama comes with it. But if you do have sex, be safe! Diseases and children at high school age is not good.), and don't really fret on the classes, unless you end up in the undesirables, then you gotta just do your best, make the most out of it, and enjoy what you can.