Deliberate mistake: Glenn Ford strikes the window in the library door with his briefcase and it instantly shatters. In reality, a blow delivered by a briefcase to a plate glass window would have produced no more than a scratch or crack.
Blackboard Jungle (1955)
Directed by: Richard Brooks
Starring: Glenn Ford, Anne Francis, Louis Calhern, Margaret Hayes
Genres: Drama
Continuity mistake: In the climatic confrontation between Artie West and Mr. Dadier at the end of the movie, West cuts Dadier in the hand with his knife. The scene cuts to Dadier holding up his hand, and it's already covered in blood.
Richard Dadier: Yeah, I've been beaten up, but I'm not beaten. I'm not beaten, and I'm not quittin'.
Anne Dadier: I was like one of the bad kids in your class. Somebody told me a lie and I believed it. One's as bad as the other.
