Continuity mistake: After Dawson and Eve check his locker to see if the PSAT test was returned, they then start talking in the hallway next to his locker. Just as Eve says "Tell me who you think it is", there is a shot of her from the rear as she turns around to face Dawson with her arms crossed in front of her, and down by her sides. The next shot of Eve is from the front, as she says "Whoever you were just thinking of"; and suddenly her arms are at an angle away from her sides with her hands on her hips. Then the next shot of Eve is from the rear, and again her arms are straight and back down close to her sides as she says "It is". Then the next shot of Eve, again from the front shows her arms back out at an angle again with her hands on her hips as she says "Simple and obvious". There was no time for her to have moved her arms and hands during this scene, the transition was too fast. Apparently the shots of Eve from the front, and from the rear during this scene were filmed at two different times.
Plot hole: When Dawson and Eve are in the PSAT room after hours looking for the test, there is a noticeably open outside window behind them implying that was how they broke into the room. But when the security guard suddenly comes in the room and walks by the window twice, he makes no attempt to close the window and secure the room, which one would think was his job.
Continuity mistake: When Andie is doing sit-ups in the morning and practicing for the PSAT, she is listening to the news on TV. The news anchor mentions the author of the popular book "Cracking the PSAT". She says 'PSAT' not 'SAT'. But Andie immediately says something like "Way ahead of you", and holds up her copy of the book. On the cover, it says "Cracking the SAT", not 'PSAT'.
Plot hole: When Dawson suddenly shows up at Joey's workplace, Joey is inside asleep at the desk and Pacey is awake sitting outside. As Pacey and Dawson start fighting verbally, their voices escalate loudly but Joey still doesn't wake up even though she's sitting right inside. It isn't until they start throwing punches at each other and fighting physically that Joey suddenly comes running out to see what is going on. It doesn't seem realistic that Joey would be able to sleep through their loud arguing, and not wake up until they are hitting each other. If she had woken up before that, she would have definitely come outside to see what Dawson and Pacey were up to.
Plot hole: When Dawson and Eve are in the PSAT room after hours, looking for the test, a security guard suddenly comes in. They both have time to duck under a desk and avoid being seen, but as soon as the guard passes them, they start talking in rather loud whispers. The guard is still very close to them, as he quickly returns to walk past them going the other way. It seems reckless for them to be talking like that with the security guard so close at hand who would normally hear them, and so soon after he walks by them.