A.J. and his friends think that Ms. Todd is the strangest substitute teacher in the world, and they decide to investigate her.

Second grade graduation turns into a full-blown spectacle when an overzealous PTA president pulls out all the stops for A.J. and his classmates on the last day of school.

Ms. Hannah wears dresses made out of potholders and collects garbage instead of throwing it out. Plus she's making A.J. be partners with smelly Andrea. This is the worst art class ever!

When Ella Mentry School invites a local dentist to speak on National Dessert Day, A.J. and his friends uncover the dentist's secret plot to promote cavities for more business.

A skateboarding principal offers unusual incentives to his students to motivate them to learn more.

A.J. has trouble coming up with a talent to put on display in his class's upcoming talent show.

A.J. and his classmates are convinced that the new school librarian, Mrs. Roopy, has multiple personality disorder because she keeps pretending to be famous people. Mrs. Roopy, the new librarian, comes to school wearing a pot on her head! One day she thinks she's George Washington, and the next day she's Little Bo Peep! The worst part is, she doesn't even know how crazy she is! In fact, all the grown-ups at A.J.'s school seem to have something wrong...

Mrs. Cooney, the school nurse, is so beautiful that A.J. has a crush on her--even though he suspects she might be an international spy!

A.J. and his friends find out what amazing things Miss Lazar, the Super Custodian at their school, can do.

A.J. is planning a big birthday to celebrate turning 9 and his parents even hire a party planner named Mr. Marty. Mr. Marty orders some weird stuff to celebrate though.