In this episode we finally find out that the J in TJ's name is Jasper.
Miss Finster gets Ashley A and Ashley Q to sing the "Igor the Vampire" song. But they have never been in the same class as TJ and the gang until now - only Ashley B and Ashley T have. On that matter, Randall has never been in their class either!
Hector and Tubby are now in the first grade, yet in the crowd outside TJ's house in the first act, Hector is seen in his kindergartern outfit.
When the kindergardeners find out about TJ not going to school, the are the same ones who went to first grade.
Even though King Bob is in the 7th grade, he returns in the movie to set the new king straight.