Mind Benders(1987)

About the film

Two "Normal" teenagers - they cut classes, get into fights and are never far from their Walkman headsets - notice a sudden change in their fellow students. No one is able to explain this zombie-like behavior which, at the command of an unseen alien, makes them punish transgressors with merciless violence.

Cast: Roy Thinnes, Skip Lackey, Lee Tergesen