It's good, but I'm confused.
That movie confused the hell outa me. You called them Alex and Christian instead of Eric and Dylan. There origional plan was to blow up the cafateria with propane bombs at 11:17 and shoot the people who ran out. They wore trenchcoats at the beginning of the shootings. Eric used a 9mm carbine rifle and a sawnoff pump shotgun, and Dylan used a semi automatic tech-9 and a sawnoff double barrel shotgun, not assault rifles. They had pipe bombs. Their favorite videogame was Doom. After he asked Cassie Bernel if she believed in god, he shot her and the recoil from the rifle broke his nose. They killed themselves at the end of the shooting. And last but not least, one time the jocks threw bags of dog shit on them which in my opinion is a good enough reason to shoot up a school. All this I wrote are kind of important things you forgot to add. You did get some things right though, like Natural Born Killers was their favorite movie, they told their friend to leave, and they asked Cassie Bernel if she believed in god. I would know; I'm obsessed with Columbine. Other than that, good movie.