Corrected entry: When Stan is taking a shower, Mrs. Brummel comes in. When Stan hugs her, the right side of her scalp comes off. Then in a later scene, Delilah and Casey are hiding in the closet of the faculty lounge. They find the body of Mrs. Brummel and she falls to the floor. But now the left side of her scalp is missing.
Corrected entry: When Zeke hands Mary-Beth the drug, when she takes the drug from him the lid is not on, then it is in the next shot.
Corrected entry: Near the beginning, when the coach is drinking water like it's going out of fashion, the first shot shows the water bottle on the dispenser practically empty, then in the next shot it is full again.
Corrected entry: During the scene between Stan & Gabe near the lockers, Stan asks Gabe why students are lined up there to go to the nurse's office. When Gabe answers "Something about an ear exam..." the camera shows his profile - his mouth isn't moving at all to the words.
Corrected entry: When Marybeth is in Zeke's house before they take the drug, she's near the table near Stokely, but in the next shot she's sitting on the sofa near Casey.
Corrected entry: As the group of students are heading outside to Zeke's car they pass a classroom with the door open - you can see Gabe (Stan's friend) sitting there. Shortly afterwards when they are outside Gabe and the rest of the football team come over to speak to Stan. Gabe is in two places at once.
Corrected entry: When the students are leaving the classroom, after the scene where they first find out Mr. Furlong is an alien, the camera shows Zeke leaving the room twice.
Corrected entry: When Casey and Delilah run into the closet in the faculty lounge in a hurry because they hear the two teachers coming, they don't completely close the door (we see this in several different shots). Yet when the coach hears them and comes over to open the door and get them out, the door is completely closed.