Bang Bang You're Dead is a 2002 drama, (almost) school-shooting film, directed by Guy Ferland. That's won 7 awards.
The movie takes place a year after the protagonist, Trevor, talked about blowing up the football team. Everywhere at school, everyone calls him names: 'mad bomber', 'trashcan' and probably the least offensive 'dork'. Because of this, he had to go to summer school, the school had to install metal detectors and he's started to document his everyday encounters at school on a camera. Which is called a 'diary of violence'.
The movie follows as Jake contemplates about a play being done in the school theatre, correspondingly named 'Bang Bang You're Dead'. This is the entire script for the play, beware, it is long.
He meets the new girl, Jenny, who's also doing the play.