I don't have a lot of first hand experience, but fights don't happen as much as TV would have you believe.

I don't have much either, but basing it on behind the scenes TV shows based on jails. (I guess different to prisons - more comings and goings). Obviously TV will show you every fight, and maybe they don't happen often, but I bet there is a lot of posturing leading up to those fights. I remember what high school was like, probably not much different.

Your high school must have been tougher than mine

Playing dungeons and dragons all day to pass the time?