Visible crew/equipment: When Bill can't start the bus Ralph opens the hood and tells Bill the entire engine is gone, then as Ralph grumbles about what he'll tell the school board, the boom mic dips into view over Ralph, at the top of the screen. (00:33:50)
Continuity mistake: When everybody returns to the bus, in the closeups of Bill turning the ignition key to no effect, the sleeve we see has navy blue and white stripes, but Bill is wearing a light color blue striped shirt. (00:33:20)