"There is a movie I am trying to figure out. In the beginning there are cheer leaders. There is a killer who is going falls for a girl that has a boyfriend I think. He kills teachers and students. It all takes place in a high school. I think it starts off with the killer walking through a field. There is a scene where he puts a kids head in a vise grip. Theres another scene where he hides under bleachers and kills people. Another scene he kills the janitor..."

Cutting Class (http://www.imdb.com/title/tt0097136/)?