If

Linsay Anderson film from 1968 stars Malcolm McDowell.

Life at a British Boys School becomes unbearable until the students revolt. Kind of a forerunner to "Taps" but more surreal.

McDowell's second film, his first was also for director Anderson. This film was considered one of the top Brit films ever.

Dramatic, dreamlike. stark, and thought provoking.

http://www.imdb.com/title/tt0063850/