Other mistake: The girls are invited to the cool party where the cool kids go. They are discussing it in the hallway, pitching a non-existent boat party. Throughout the scene, extras just keep walking back and forth to make the space look like a busy school. A guy with a loud green Hawaiian shirt carrying a clipboard is particularly noticeable. (00:02:30)
Other mistake: When the newly freed hawk poops on the annoying friend of the main jock, said fecal matter looks nothing like the real deal. Not just that; it also is entirely gone from the guy's face and hair in a couple of shots, as you can see the supposedly soiled side of his head when he is storming off carrying the ladder. (00:04:30)