Evil (2003)

After being expelled for fighting, 15-year-old Erik is sent to Stjärnsberg Boarding School in 1950s Stockholm, his last chance to graduate and escape his violent home life. The school, however, is governed by a sadistic student council that enforces brutal discipline on younger students, with the staff turning a blind eye. Erik, determined to stay out of trouble, resists their authority, becoming a target for relentless bullying.