Dan Gutman

A.J. and Andrea go on a class trip to the museum, where their guide has been warned about their possible misbehavior.

Getting a chance to choose a guest speaker at their third grade graduation, A.J. and his classmates have their minds set on the most popular singer and rapper in the world, Lil Mouse, to have the greatest graduation in the history of graduations.

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.

On a cross-country vacation with their parents, twins Coke and Pepsi, soon to be thirteen, fend off strange assassins as they try to come to terms with their being part of a top-secret government organization known as The Genius Files.

"Summer is almost over, and you know what that means--time to head back to school! But when a tropical storm ends A.J.'s vacation earlier than expected, he and his family have to stay at Andrea's house. Ugh, disgusting! When everyone in the house starts getting cabin fever, and even back-to-school shopping won't calm the kids down, Andrea and A.J. are sent to Camp Ockatollyquay. The catch? It's a camp to get kids ready for school! But not to worry--Andrea...

"A.J. and the gang at Ella Mentry School are in for a super surprise when a new teacher, Mr. Cooper, take over their third grade class"-- Provided by publisher.

Eleven-year-old Harry Mancini lives in the house where Houdini spent his final years, so he has always been interested in the famous magician, and has even learned a few simple magic tricks; he just never expected Houdini to contact him from beyond the grave--and what Houdini wants him to do could well cost Harry his own life.

"Math scores at Ella Mentry School are way down! But Mrs. Stoker is bringing in an expert named Ms. Greene to help A.J. and his friends study. Ms. Greene is nice, but she sees numbers everywhere--skateboarding, football, even in height! Between solving weird word problems, being mathletes, and sitting on their denominators, how much more math can the class take?"--Amazon.

When all school holidays are cancelled at Ella Mentry School, A.J. and the gang work with teachers to figure out weird-but-real holidays they can observe, in a book featuring pages of puzzles, games and more.

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.