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.

When the teachers of Ella Mentry School go on strike, A. J. and the gang meet a new principal who does not believe in rules and says that the students do not have to learn anything if they do not want to.

"Every day goes smoothly at Hardy Elementary School because Principal Tate keeps everyone happy and everything in order. But what happens when her car breaks down one day and she's running late? How will the students, teachers, parents, and visitors get through the day? Will chaos take over Hardy School? The solution is simple: Everyone at the school must do their part to save the day"--

Mr. Bundy, a school principal, discovers that he should be careful what he wishes for when a grateful elf grants him three wishes.

After the principal of P.S. 88 gets caught up in a messy spell by one of his students, the other kids rally to help him out.

"Meet Mr Bundy! He's the principal at PS 88, and believe it or not, he was once magically turned into a slimy green frog. He played leapfrog, ate bugs, and even croaked, "Ribbit!". One thing all the kids at PS 88 know for sure is that their favorite principal is never far from zany (mis)adventures."--Back cover.

While Raven is away, Luca breaks his promise to her and returns to the Wish Library, asking to be in charge at school, but being principal for a day is not all fun and games.

"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!"--

"George and Harold are fourth grade buddies who love practical jokes. When their latest prank drives their science teacher over the edge, their clueless principal, Mr. Krupp, quickly hires a replacement: Professor Pippy P. Poopypants. Of course, George and Harold can't resist making fun of the Professor's silly name. But then the Professor retaliates by forcing everyone in town to change their own names to be equally silly -- with colossal consequences!"--...

When Harold and George turn fourth-grade teacher Ms. Ribble into the evil Wedgie Woman, she gives the wedgie of doom to unsuspecting people who stand in her way--including principal-turned-superhero Captain Underpants.