Continuity: When Cooper is showing Charlie a move the front of his shirt is dry. In the next shot his shirt has a large sweat mark.
Continuity: As Jody and Eva leave their room to smoke, the number on the door says 903C. When they run into Eric in the hall, he tells them to "come downstairs" to smoke. When the three arrive at his door, the number is 1103C.
Continuity: In the beginning of the film, when Jody and Eva leave to smoke, the number on their dorm door says 903C, later when Jody, Maureen, and Eva leave to celebrate Eric's birthday, their dorm door says 903A.
Revealing mistakes: The audience that watch the students' performance at the end of the movie is exactly the same as when the students go to watch the ballet at the beginning of the movie.
Continuity: When Charlie and Jody are looking in the paper, Charlie has his arm behind Jody's head. When Jonathan gets onto them for talking, he moves it down, but when Cooper comes over and pulls the paper down, Charlie's arm is behind Jody's head again.
Factual errors: Maureen's mother comments that Juliette's father managed a Walmart in New Jersey ("Perth Amboy"). However, the first Walmart in New Jersey didn't open until 1991.
Continuity: When the Jonathan Reeves and Cooper are chatting in the theater, you see Eric coming down from the jump solidly in the background. In the next instant he has fallen over and injured his ankle. His landing from the jump shows no imbalance that would lead to an injury.
Continuity: The pizza that Maureen is eating at the bowling alley changes between shots.
Continuity: When Jody goes to a Broaway Dance Studio, she asks for a 5:30 class. After the class she tells Cooper that she had already had dinner, which shows that the class took place in the afternoon. However, right before they start warming up with the Mandy Moore song, two female dancers say hi to each other and one says, "Good Morning."
Revealing mistakes: When Cooper is teaching Jody, Charlie and Erick the new steps, he is making them up as they go, but the understudies can be seen behind marking the double pirouette when Cooper hasn't even said it, as if they already knew what step was next.