Continuity mistake: Toward the end of the film while the school is on fire, Kimble's partner runs to the side door gun drawn. She is spotted by Crisp's mom and is hit by her car, knocking her down. When she arrives shortly with a bat to save Kimble she is much more banged up than when she was first struck, most noticeably a rip on her right shoulder that wasn't there before.
Continuity mistake: On Kimble's first day as the kindergarten teacher, he's wearing a white shirt with jeans and a jacket. When he shows up the next day and is talking with the mother of one kid, he's wearing a maroon shirt with khakis. They then cut to the kids doing the pledge of allegiance, then to the kid eating everybody's lunches. In that shot Arnold is wearing the white shirt, jeans, and jacket. But then, they cut to "Who is your daddy, and what does he do?" sequence, and Arnold is back in the maroon shirt and khakis. It seems the "Lunch-box kid" part was in the wrong spot.
Continuity mistake: In the scene where Phoebe is interrogating Cindy, Cindy refuses to testify or identify Crisp in the line up. She then tries to leave the interrogation room, but it's locked. When the interrogation is over, we see that Phoebe opens the same door without any problems, or anyone opening it from the outside.
Continuity mistake: Toward the end of the film while the school is on fire, Kimble's partner runs to the side door, gun drawn. Phoebe is spotted by Crisp's mom and is hit by her car, knocking her down. Crisps mom's hair is pulled back, but when she is in the school locker room and discovers Crisp shot dead her hair style is different, not pulled back.