Toby's 4 attackers???
Mr. Roberts in the classroom says he would report the "4 boys" who attacked Toby. Who the hell was the 4th? There were only 3 that harassed him throughout the movie, and there were only 3 in the locker room that attacked him.
The only possible 4th person I can think of was the one who didn't do anything to stop the attack. Roberts grabbed him as he left the locker room and asked where Toby was and he cowardly said "I don't know".