The next morning, the parents cause an uproar in front of Mullins at her office, while the kids decide not to let their hard work go to waste. When the new substitute discovers that the kids are missing, she informs Mullins, and a secretly impressed Mullins and the parents race to the competition. Fed up of being constantly bulldozed around by Patty, Ned finally stands up for himself by breaking up with her and leaves to see the band perform. A school bus comes to pick up Dewey, who leads the kids to the Battle of the Bands, and decides that they should play a song written by Zack. Initially dismissed as a gimmick, the band wins over the entire crowd. Much to Dewey's dismay, No Vacancy wins, but the audience chant for School of Rock and demand an encore. The parents, while upset at the deception, admit to being impressed by the children's talent and confidence on stage, alongside an ecstatic Mullins.