Fourth graders George Beard and Harold Hutchins are a couple of class clowns. The only thing they enjoy more than playing practical jokes is creating their own comic books. And together they’ve created the greatest superhero in the history of their elementary school: Captain Underpants! His true identity is SO secret, even HE doesn’t know who he is!

Meet Ricky Ricotta, a little mouse with a big problem! Ricky Ricotta lives in Squeakyville with his mom and dad. Ricky has a hard time making friends at school, and the neighborhood bullies are always picking on him. If only Ricky could find someone to be his best buddy and keep those creepy bullies away! Meanwhile, on the other side of town, a mad scientist named Dr. Stinky McNasty has created a mighty robot who is as gentle as he is powerful. Dr. Stinky plans to make the robot destroy Squeakyville, but there's one little thing in his way: Ricky Ricotta!

Freddy Thresher has a problem: a really, really, big problem. He's the only one in his class who hasn't lost a tooth! All of the other students in Mrs. Wushy's first grade have signed their names on the Big Tooth, and Freddy's determined to get his name on it, too. So when Max "The Meanie" Sellars calls Freddy a baby, Freddy decides he's going to lose that tooth one way or another, even if it means getting punched in the face at recess, and even bigger trouble, with Mom!

Hotdog and his friends are going on a mad adventure to help a baby bird find his missing mom! They'll climb to crazy heights to find her! But can they handle dirty diapers and karate-chopping roosters along the way?

Mr. Macky dresses up as Abraham Lincoln to get the students at Ella Mentry School excited about their Presidents' Day oral reports.

Something weird is going on! Mrs. Yonkers, the computer teacher, is the nerdiest teacher in the history of the world. She can type with her feet! She buys foam cheeseheads off eBay! She even puts a Webcam on a turtle! Is she trying to take over the planet?

With over one million copies of his books in print, New York Times best-selling author Dan Gutman is a hit with young readers thanks to his energetic stories tinged with uproarious humor. Mrs. Kormel Is Not Normal! introduces Ella Mentry Elementary School's zany bus driver. Mrs. Kormel has been driving everyone crazy lately, and it's up to AJ and his buddies to figure out why.

A.J. thinks that nothing can possibly be as boring as a sleepover in the natural history museum. However, anything can happen when Ms. Krup is in charge. She says the dinosaur skeletons come to life in the middle of the night. Is she right?

Nerdy Nelson wakes up on his 10th birthday to discover he has incredible ninja powers!

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?

Something weird is going on! 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. They’re going to have to do the detective work to get the goods on her. But it won’t be easy! Ms. Todd is the weirdest substitute teacher in the history of the world!

What could be weirder than a mad science teacher who invents a car that runs on potatoes and wants to take over the world? How about a bus driver who can't even "find" the weirdest school on the planet?

Miss Lazar, the janitor, likes to dance around the school with a mop. She has a secret room in the basement where she keeps the bad kids, and she's the weirdest custodian in the world.

Disaster reigns when A.J. participates in the school's holiday pageant celebrating Christmas, Hanukkah, and Kwanzaa.

Forget Thanksgiving. The biggest turkey of all is running around Ella Mentry School - Dr. Carbles, the president of the school board. He is grumpier than ever and wants to fire Mr. Klutz. Will A.J. and his friends be able to save their principals job?