He has been in Forks, Washington for six months and they have been the most excruciatingly boring six months of his life to date.
There are so many things he can't do here, because this town is so small, and if anything gets back to Daddy dearest they'll just move somewhere worse. He honestly can't imagine anywhere worse, but then, before Forks he couldn't have imagined Forks.
Getting in fights at school is one of the few remaining forms of entertainment he can find any joy in, and it's also necessary for a few other reasons. So he doesn't waste any time on his first day back: it's ten after ten, he just got out of Art, the hallways are full of students rushing from class to class, and he finds one of the boys who already hates him a little and gives him a hard shove into the corner of a row of lockers.
Success. The crowd tries to stream around them at first, but at the point where the other boy has him on the ground and is punching him repeatedly in the face, traffic has come to a halt on all sides.