Pump Up the Volume (1990)

Pump Up the Volume
Music, Drama
Mark Hunter, a lonely high school student, uses his shortwave radio to moonlight as the popular pirate DJ "Hard Harry." When his show gets blamed for a teen committing suicide, the students clash with high school faculty and the authorities.
Starring
Christian Slater, Samantha Mathis, Annie Ross, Scott Paulin, Mimi Kennedy, Andy Romano, Keith Stuart Thayer, Cheryl Pollak, Jeff Chamberlain, Lala Sloatman
Directed By
Allan Moyle