During the ballet lessons, the class is dancing. Although you hear the teacher saying exactly which movements the students should make, you do not see her lips move at all. The given instructions are synced with the visuals.
On Sara's first day at the new school, she is walking up the front stairs and there is a guy with braids outside. After she goes through the metal detector, she walks past a door in the hallway, and the guy is there again, this time with his jacket off.
When Sara first goes to the club, she is seen greeting Diggy and all their friends. In one of the next scenes in the club, on the same night, a break dancer is shown in the middle of a circle. Diggy is seen in the circle watching, with a completely different outfit on.
When walking into Steppes with Sara, Derek passes a girl with long braided hair and a cowboy hat. When they make their way to the dance floor a couple of seconds later, the same girl is seen on the dance floor.
First scene at Steppes, when Sara and Derek are dancing, one of Nikki's friends is dancing next to them, then it cuts to her sitting with Nikki while they talk about Sara then cuts back to the dance floor where she is still dancing next to them.
The first scene at Steppes has several shots of the dance floor that are from the final scene of the movie. You see Diggy in the pink pants and Nikkie in the black skirt as well as the individual dancers.
The same shot showing the school entrance and a guy wearing a yellow jacket walking on the street is used twice. Once in the scene where Sara arrives at the school for the first time, and once right before the scene with Malakai and a girl in the school bathroom.