If....

If.... is a 1968 British satirical surrealist psychological drama film produced and directed by Lindsay Anderson, and starring Malcolm McDowell in his film debut as the character Mick Travis, who appeared in two further Anderson films. Other actors include Richard Warwick, Christine Noonan, David Wood, and Robert Swann. A biting satire of English public school life, the film follows a group of pupils who stage a savage insurrection at a boys' boarding school. The film is notable for jumpstarting McDowell's and Anderson's careers as well as using black-and-white and colour switches throughout the film along with blending surreal dreamlike sequences and realistic elements. Director Stephen Frears worked as an assistant director to Anderson on this film.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.