Some guys smeared crap all over the bathroom walls once. Also, some girl stabbed a guy with an exactoknife, he had to go to the hospital. School is full of Ghetto kids. Luckily, I'm in IB, so I don't have to have a lot of contact with them.
Also, last year, someone threw an orange at the back my head when I was walking from lunch, did not know if it was intentional or not, and I didn't know who threw it. Didn't know who threw it either, but I don't think I did anything offensive besides be a white kid in a school with a black majority.