When Suzanne is talking to Legs Raffertino about love at the beginning of the film; she grabs his jacket lapel and wrinkles it. But on the following cut the lapel is now neatly straightened out. Then on the following cuts after that the lapel goes back and forth between wrinkled and neatly straight.
After Dr. West fires her pistols, in the next shot of the students getting up off the floor, Legs is already standing up at the back of the room and Bullets is just getting up. But, in the following shot, both are shown getting up off the floor again.
The style and colors of the passenger rail cars change from the beginning of the film to when it arrives at the station.
When Dr. West is introduced to the students, she begins shooting two revolvers, but fires way more than the twelve shots capable from the pair of pistols.
When Zorch, Carter and Barton return to the college from the train station, as they ascend the stairs, a shadow of the boom microphone is visible on the wall behind the trio.
When Woo Woo comes out of a building pulling a wagon full of books, a clear shadow of the boom microphone is visible on the ground behind him.