Gaffes

In the Yogurt Shoppe, Trent's hand goes from one of Steve's shoulders to the other and back again.

At the beginning of the movie, at 6 minutes 47-48 seconds, after Andy shoots Officer Kramer, he moves his body from the car. As soon as his head touches the ground, you can see that his right arm moves toward his lower body/knee for a couple of millisecond by itself.

The position of the right arm changed again after Andy pulls out the body of Mary Jo from the car and puts it on top of Kramer's one.

In the early classroom scene with Mr. Rooney, the word "tomorrow" is misspelled as "tommorrow" in "Tomorrow's Assignment" on the chalkboard. It's doubtful that an arrogant English teacher would misspell this word.

When Steve finds and bonds with the janitor in the basement boiler room, Steve asks, "What the hell is going on around here?". In the janitor's explanation, he describes a fatal car crash. He says that 4 teenagers "got properly squiffed on Daddy's gin", but then moments later, while describing the crash, says that beer cans covered the road "as far as the eye could see".

When Gavin leaves the building after seeing his parents want him go join the club. He is walking on a log and talking but his mouth does not move.