Continuity: Mr. Furlong pushes Zeke into the fishing tank and it breaks, soaking him from head to toe with water. Moments later they are walking out and he is dry.

Continuity: In the scene where Casey is walking up to the school after his father drove him there, we see that Casey's bagstrap is backwards. Then they cut to the car, and when they cut back to Casey and all of a sudden, his bagstrap is turned the right way. The next cut is when coach Willis and Casey's father look at Casey and then Casey starts to walk up to the school again and his bagstrap is turned backwards again.

Other: After they kill the alien/teacher and leave the school they pass one girl in a blue/green tee-shirt with a waterbottle. Just one scene later you see this girl again under a tree, suddenly in front of them.

Continuity: In the scene where Zeke is in his car driving and fighting off Miss Burke, just before he crashes into the bus, you see him inside the car struggling to buckle his seat belt and therefore with all hands on it. Problem is, the camera filming the car from the outside clearly shows that the driver has both hands firmly gripped on the steering wheel and is swerving out of control.