An elephant never forgets (1935)

A collection of animals goes to school; their teacher, a goose, asks them several questions, during which time an ape, sitting behind an elephant, keeps tormenting the elephant. The teacher leaves the room, putting a turtle in charge. While she's gone, things go fine for a while, but the ape starts an all-out book tossing brawl. As the teacher returns, everyone suddenly stops, and although the room is a shambles, she congratulates them on behaving and dismisses them for the day.