Who played Santini, the mentally retarded student, in the 1955 film classic The Blackboard Jungle? December 17, 2017 By Show answer Jamie Farr, best known for his portrayal of nutty, cross-dressing corporal Maxwell Klinger on TV’s M*A*S*H. He is listed in the movie credits under his given name, Jameel Farah. More Entertainment QuestionsMore Movies Questions