I saw this movie last night after I had taped it from Starz. I might be a dumb ass(and sometimes I think I am) but my question is did he really kill Benny and cut of Cesar's finger? I know everything points to him but when he was asked by Cesar if he did it he said it in such an off hand manner I got the feeling he was being sarcastic and really didnt care. I had a feeling the other male teacher with all the guns really did it. The movie had no resolution in my point of view and although the acting was great it was kinda ambiguous.
The arrow was tipped with a Syringe, I'm pretty sure that alludes to Garfield doing it to Ceaser. After all, he used the same Syringes in class.
Benny? I'm not sure. Maybe, he had the beads. Then again, as that other teacher said, Most of the teachers got them at Graduation. I'm thinking he gave the guy an arrow full 'o Morphine, and someone else came along and finished the job.
Nah, Garfield did it. The finger, when it came back, was tattooed with "r u dun?". That's what he had said to Cesar earlier on that had caused Cesar to get all riled up.