It's Halloween and A.J. Thinks Ghouls Have Come to His Weird School! Here is a silly school story full of weird adults and rib-tickling moments that are far more funny than scary. The principal's daughter is the new student teaching assistant in A.J.'s class. But she sure is weird; she wears black clothes, loves her pet bat, and eats blood pudding; could she actually be a vampire? Plus, there's something spooky in the bathroom, and A.J. thinks it's a ghost! One thing's for sure, A.J.'s school only gets weirder around Halloween!