Luke is shown coming out of his coffin twice.
In the bar scene where Chloe is playing darts, the camera shows that she there are three darts in the dartboard, but then she throws another dart. The problem is, you only get three darts.
In the playback of the murder tape, the line: "You stole my key, you stole my book...now I want your camera, I want the tape, and I want my stuff back now" is said differently on the video than it is said the first time that line took place.
During the race at the beginning of the movie, the oarlock breaks, but in subsequent scenes it is only shown open and intact, not snapped to pieces.
When Lombard and his crony chase Chloe across campus and over the football field, they run through the sprinklers. However, none of them appears wet in the next close-up.
It is not possible for a plastic oar lock (like the ones on the shell) to break as shown.
The Skulls are famous for tapping fifteen students a year. However the night after Luke is tapped Will asks him when Caleb Mandrake and his seven new friends walk in if he will introduce them. The seven men plus Caleb and Luke equals Nine. Six short of fifteen.
The walkie-talkie used by a character in the robbery scene is really an Ericsson cell phone. Some cell phones have functions that let them work like walkie-talkies, but they are made by Motorola.
Paint schemes of the oars are completely different than the actual oars of the colleges they are supposed to represent.
During the car chase through the park, the Jeep's lights go out as the driver goes around corners, because he is using the emergency brake, which turns off the daytime running lights.
When Luc first appears in the gray shirt to challenge his soulmate it is all sweaty. Later in the scene and with the new "head" of the skulls his same gray shirt is perfectly clean.
When Lucas is talking into the phone, you can hear the words, but his lips aren't moving.
When Judge Mandrake asks the Senator if they should vote again, his lips don't move.
When Will falls off of the ledge breaking his neck, a safety line is clearly visible coming out of his pant leg.
After luke and caleb fall into the water with the weather vane and caleb is looking for luke a hand is visible on the left hand of the screen.
When Chloe is being chased, she runs out of a campus building, across the Yale Bowl, and into another campus building. In reality, the Yale Bowl is located a few miles from the main campus.