Second-grade graduate A.J. and his family rent a beach house, but summer vacation is ruined when annoying Andrea shows up and develops a crush on the lifeguard.
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 new school librarian, Mrs. Roopy, has multiple personality disorder because she keeps pretending to be famous people.
A.J. and his friends are in for a wild adventure when their school bus gets a flat tire and their driver, Mrs. Kormel, gets lost in the middle of nowhere.
Even though people say Mrs. Patty, the school secretary, is a witch and her husband is a ghost, A.J. decides to take the risk and trick or treat at their house because they are known to give out the best Halloween candy in town.
The new lunch lady at Ella Mentry School, Ms. LaGrange, writes secret messages in the mashed potatoes and tries her best to get A.J. and the other students to eat healthy foods.
When peanut butter and jelly sandwiches start disappearing from the Ella Mentry School cafeteria, the security guard, Officer Spence, goes too far when he starts arresting people and applying lie-detector tests to find the thief.
"It's time for the annual Ella Mentry School talent show, and this year Principal Klutz has hired a wacky professional, Mrs. Lane, to help the kids with their talents"--
When summer vacation is interrupted by a tropical storm, Andrea and A.J. are sent to a camp in order to prepare them for school, but once they rally the other Ella Mentry school students, they have an ending to the summer they will never forget.
"When Miss Daisy returns to Ella Mentry School as a substitute teacher, the kids are in for a weird and wacky day of not learning about math, writing, the weather, and more"--
New third grade teacher Mr. Granite has so many strange ideas about how to make Ella Mentary School environmentally friendly that the students are sure he must be an alien.