Continuity mistake: After Ben nearly hits Madison, he gives her a ride home and she leaves her music notebook in his truck. When Ben is sitting in his room mulling over returning the book to her, the diminished amount of daylight coming into his room suggests that it is early evening approaching sunset. Yet, when he goes to her house to give her the notebook, the sun is shining brightly as if it were still afternoon.
Factual error: There is no way Ben would get his drug test results back the same day. High school athletes are also rarely even tested for drug use, this occurs mostly in Collegiate and Pro sports. Also, when athletes are tested, a witness of the same sex is always present. The urine is then sent to a lab for testing which can take at least a few days.
Continuity mistake: When Ben and his girlfriend are in the diner where she works, they're talking at the bar (the scene right before the one with Madison and Josh making out in the car), and Ben's girlfriend tells him that she thinks he should leave. In her close-up her head is resting on her arms, which are crossed. Next shot, when Ben is walking toward the exit, she's sitting up straight. Then in her next close-up, her head is once again on her crossed arms.
Continuity mistake: When Madison pushes Amy into the pool while handcuffed to a chair, the camera shows a close up of her handcuffs behind her back at the bottom of the pool. Amy's handcuffs were applied with the swinging jaws inward, towards her back. In a subsequent shot, Ben is picking the handcuffs to free her and the swinging jaws are facing outward.
Revealing mistake: In the pool scene after Ben saves Amy, Ben turns to Swimfan. If you look closely at Swimfans feet you can see she is wading in the pool.
Continuity mistake: When Ben and Madison are in the pool together for the first time, the camera is behind Madison. You can see that Ben's hair is completely wet and slicked down. When the camera is behind his back, his hair looks more dry and a little is sticking up on top.
Continuity mistake: In the scene at the party, when Ben is introduced to Madison, and then she meets him outside the bathroom, she pulls her cardigan down off one shoulder. In the next shot it is off both shoulders and in the shot after that it is only off one shoulder again.