Dangerously Close (1986)

Dedee Pfeiffer, Carey Lowell, Thom Mathews, Angel Tompkins

Rebel without a cause or a clue at an elite but uptight High School discovers some of his classmates have formed an even more elite clique more or less hell-bent on ridding the school, and quite possibly American society, of what they deem to be its undesirables because of ethnicity, politics, etc.