This classroom guide provides an overview of Dav Pilkey's Captain Underpants book series and how it can be used to meet Common Core State Standards. It introduces the main characters of George, Harold, and their principal Mr. Krupp who transforms into the superhero Captain Underpants. It also summarizes some of the plots of the graphic novels in the series and discusses how Pilkey encourages creative expression in children through imperfect examples. The guide concludes by listing specific Common Core standards that can be addressed through activities related to the Captain Underpants books.