Crew or equipment visible: In a lot of the scenes in the cellar in which they keep the bad students, a microphone that appears to be on a track shows in most of the shots.
Crew or equipment visible: When Pierre is talking to a student in his dance studio, a boom microphone can be seen in the window behind the two characters.
Factual errors: In the dance scene with Pierre and Morgan during the detention, they dance Argentine tango, which is not considered a ballroom dance. American and international tango, both ballroom dances, are completely different.
Factual errors: Since the students in Pierre's class had never competed before, they would be automatically in the newcomer category, whereas the students from Pierre's studio would be competing at higher levels of bronze, silver, gold or open syllabus. Also, the students would be disqualified from dancing moves that were non-newcomer/bronze syllabus, which several of them did.
Errors in geography: When Monster and Caitlin are exiting the school via the main entrance, in the far background, you can see the TD Waterhouse logo on the top part of the tall white building on the right side of the screen. This TD (Toronto Dominion Bank) branch is located in Toronto's prominent Bay and Bloor Sts (Yorkville) thus removing the idea of this being New York City.
Continuity: The first time when Pierre is in Augustine's office, he mentions the pictures of students on the wall. During the shot of the students, the pictures of Rock's brother and of LaRhette's brother are side by side. But when Pierre asks Augustine about Rock and LaRhette, she points out the students on the wall but LaRhette's brother's picture is below Rock's brother's picture.
Errors made by characters (possibly deliberate errors by the filmmakers): In one scene in the basement, Antonio accidentally calls YaYa by her real name instead of her character's name.
Continuity: In the tango scene of Pierre and Morgan, Pierre his shirt is tucked into his pants, when he says positions please and he walks aside everybody lined up, the shirt is over his pants.
Revealing mistakes: At the dance competition Dulaine lets Rock borrow his Tux coat. Dulaine is much smaller than Rock however, the coat looks over sized on Rock when he's on the dance floor.