Continuity: During the conversation that Kyle has with his brother, the backpacks behind them change positions between shots
Factual errors: ETS regulations require that math problems' answer options must go in numerical order. When the six are looking at the test on the computer, the second question goes A: 5 B: 3 C: 9 D:8 E:6. Obviously, these are not in numerical order.
Continuity: Near the end of the movie when Francesca kisses Matty their heads tilt to the left, but when shown from the reverse angle their heads are tilted to the right.
Plot holes: In the ETS building, Francesca and Matty are supposed to be on guard while the other four students take the test. Previously, they needed to sneak across the floor to avoid the security camera, but now they are sitting on the desk in plain view of the camera.
Continuity: In the scene where in Francesca imagines that she was Trinity from The Matrix (1999), the reflection of the door knob shows that she was still wearing her old clothes from the previous scene and the not the tight leather clothing of Trinity. In the next shot she slowly raises her hands to her head, but the next shot shows her hands are already on her head, the follow shot shows again her hand being slowly raised.
Factual errors: At one point, Desmond says that he could "Ace the math and still not get a 900." You get 400 points simply for putting your name on the test, 200 for verbal and 200 for math, leaving 600 for either section. If he were to ace the math section, this would leave him with a score of 1000 points, which is higher than a 900.
Factual errors: The cheat sheets the kids made only had the letter answers. The SAT uses many different forms with both a different order of questions and a different order of answers. So the cheat sheets would have been useless.
Continuity: When Roy first climbs up the tree you can visibly see he is wearing bright blue boxers. When he is being pulled out of the building during the escape you can clearly see he is wearing white ones.
Errors in geography: ETS is not located in Princeton, NJ as mentioned in the film. It is really in Lawrence Township, NJ, which is directly next to Princeton.
Continuity: When Roy climbs into Desmond's SUV, he tosses his socks at Desmond, and they very obviously land in his lap. In the next shot, they are on his shoulder right before he picks them off.