One Eight Seven (1997) 720p

Trevor Garfield is a teacher in a New York City high school. After a student almost kills him in the hallway, Garfield relocates to Los Angeles where the trouble continues after he becomes a substitute teacher. His class contains a tag crew by the name of K.O.S. Their murderous leader, Benny, tells Garfield that there will be no mutual respect between them. The tension mounts when a fellow teacher, Ellen Henry, confides that Benny has threatened her life. After Benny murders a rival tagger in cold blood and disappears, his tag partner, Cesar, takes over as class antagonist. Garfield is forced to play by the rules of the street in a pyrrhic contest between victim and victimizer.