Love the HS subgenre.
Bring it On deserves a mention for the 2000s.
Going to also throw out 2 films nobody remembers.
Making the Grade. Judd Nelson plays a delinquent who is paid to take the place of a rich kid that can’t be bothered to show up at his boarding school. Hijinks ensue.
Heaven Help Us. Set at a catholic boys high school in the 1960s. Crazy cast - Andrew McCarthy, Kevin Dillon, Patrick Dempsey, Mary Stuart Masterson, Wallace Shawn, Donald Sutherland.