Out of Control — Norma Fox Mazer

Going along with the crowd can have shattering consequences

Why does everyone always want you to make so many choices? Pizza or burgers, swimming or a movie, one friend or another, yes or no. For Rollo Wingate, who's always been the biggest guy in school, sometimes it's easier to relax and let someone else take the lead. After all, when he and his two best friends get together, they're always on the same page -- which is probably why he goes along with it when the other boys target Valerie Michon at school. Every time they see her, bad things just . . . happen. At first it's just a taunt here, a tiny insult there. But things keeps escalating, and finally, the situation turns into something much worse.
 
Rollo knows that a line has been crossed, and he struggles to make sense of how things could have gone so wrong so quickly. Maybe for the first time, he's going to have to figure it out for himself.