William Michael Schuester, often referred to as Mr. Schue, is a fictional teacher character and one of the two main protagonists from the Fox musical comedy-drama series Glee, alongside his student Rachel Berry. He appeared in Glee from its pilot episode, first broadcast on May 19, 2009. Will was portrayed by Matthew Morrison, and was developed by Glee creators Ryan Murphy, Brad Falchuk, and Ian Brennan. He is a Spanish teacher at the fictional William McKinley High School and the director of the show's titular glee club in Lima Ohio, where the show is set. He ultimately becomes the school's principal. His storylines have seen him revive the school's failing glee club, leave his wife Terri, win the love of school guidance counselor Emma Pillsbury, and marry her.

Glee is an American musical comedy-drama television series that aired on Fox in the United States from May 19, 2009, to March 20, 2015. It centers on the New Directions, a glee club at the fictional William McKinley High School, that is located in the American state of Ohio, which competes as a show choir while its disparate members deal with social issues, especially regarding sexuality, race, family, teen relationships and teamwork.