The title of a popular musical about a school for witches is "Wicked." This Broadway show, which premiered in 2003, is based on the novel by Gregory Maguire, which reimagines the story of "The Wizard of Oz" from the perspective of the witches, particularly Elphaba, the Wicked Witch of the West. The musical explores themes of friendship, identity, and the moral complexities of good versus evil. With its memorable songs, stunning choreography, and elaborate staging, "Wicked" has garnered critical acclaim and a dedicated fanbase, becoming one of the longest-running and most commercially successful musicals in Broadway history.