Continuity mistake: When the Warners emerge from a sealed crate on Miss Flamiel's desk and start singing, Yakko instantly appears behind Wakko and Dot as soon as the shot changes.
Other mistake: In the scene where Yakko, Wakko and Dot are sitting at their desks repeating Miss Flamiel's every word, Wakko is drawn without legs (only feet) during one shot.
Continuity mistake: After Yakko, Wakko and Dot jump out from their wooden crate and start tearing books from the shelves, the alphabet briefly disappears from its place above the chalkboard.
