As the new computer lab teacher tries to bring Ella Mentry School into the twenty-first century with her peculiar inventions, second-grader A.J. struggles to survive without sugary snacks when principal Klutz bans junk food.

A.J. and his friends in the second grade learn that art can be made out of anything, even garbage.

When boring Mr. Loring retires, A.J.'s class gets a new music teacher who raps, break-dances, and thinks he has what it takes to become a famous musician.

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...

It's Poetry Month and Ms. Coco, who runs the gifted and talented program, is poetry crazy! She cries when she sees a sunset! She thinks boys should have feelings! She talks in rhyme ! All the time! Will A. J.'s life ever be normal again?

Tired of following the strict rules of their grumpy replacement principal, second-grader A.J. and his classmates try to find a way to bring back eccentric but lovable Principal Klutz, who was fired for bringing a wild turkey to the school's Thanksgiving Day assembly.

As if Mondays aren't bad enough, A.J.'s bus gets a flat tire and his bus driver Mrs. Kormel gets everyone lost in the middle of nowhere.

Miss Daisy's unusual teaching methods surprise her second grade students, especially reluctant learner A.J.

A.J. and his friends are afraid that Ms.Todd, their substitute teacher, has killed their regular teacher and is trying to take over her job.

Mr. Docker, a new science teacher, is a crazy inventor who blows things up, uses potatoes for power, and has A.J. and his friends wondering whether science is for nerds or is the coolest subject ever.