Rob and Soup vie for the prize in their town's "Vermont Mardy Grah."

At the end of summer Spud and Joe eagerly return to school for more practical jokes, unaware that Principal Lamar J. Spurgle is out of retirement and awaiting them.

Life at Ella Mentry School gets a lot more interesting when the self-proclaimed nerd Mrs. Yonkers takes over the computer lab, and a new rule goes into effect banning all junk food.

During an electrical storm Jake Sherman turns into his tall, skinny, balding, and nerdy teacher Mr. Dirksen. Now, Jake and his sister Jessica have to work fast to get things back to normal.

Gooney Bird Greene takes charge of a class project as she and her fellow students in Mrs. Pidgeon's second grade class learn about fables by each making up their own based on an animal that begins with the same letter as their first name.

A young girl's talented but untamed tresses do not impress her strict first-grade teacher, who has rules for everything, including hair.

George and Harold's attempts to hypnotize their teacher results in the creation of the monstrous Wedgie Woman, who sets out to rule the world by getting rid of Captain Underpants.

Matt Stevens, an average middle schooler with a glib tongue and a knack for solving crimes, uncovers a mystery while working with "the organization," a mafia-like syndicate run by seventh-grader Vincent "Mr. Biggs" Biggio, specializing in forged hall passes, test-copying rings, black market candy selling, and taking out hits with water guns.

Principal Wagner confidently deals with a faculty washroom crisis, a psychic parrot, and a terrorizing gerbil, but when sixty-five erasers go missing, he enlists the help of the school's best problem solver and lost item locator, twelve-year-old Lyle Williams, also known as Mudshark.

Twelve-year-old evil genius, Oliver, uses his great brain to become the third richest person in the world, and finds that overthrowing foreign dictators is easier than getting the kids in his middle school to vote him class president.