Just One of the Girls (1993) on Netflix

Plot summary

Summer ends and sixteen-year-old Chris Calder enrolls at a new high school, the one where Kurt Stark and his gang have been beating him. He asks his father to teach him to fight, but the beatings go on. He walks to school dressed in women's clothes to slip past them, and after two teachers see him on the first morning, the disguise becomes his daily routine. As a girl he can talk back to Kurt, and he becomes friends with Marie, a cheerleader and Kurt's sister, whom he has a crush on. He signs up to be a cheerleader so he can share a room with Marie at cheerleader camp.