The Chaos Class (1975) Subtitles

Lazy, uneducated students mostly coming from money, share a very close band. They live together in the dormitory of this private highschool, where they daily plan their latest pranks on teachers or the other classes. When a new and obviously strict headmaster arrives, the students naturally try to overthrow him. A comic war of nitwits follows.

IMDb: tt0252487 · TMDB: 83651