 The tours last approximately one hour.List of Welcome Back, Kotter episodes

"Welcome Back, Kotter" is an American television sitcom that originally aired on the ABC network from September 9, 1975 to June 8, 1979.The show stars comedian Gabe Kaplan as the title character Gabe Kotter, a wise-cracking teacher who returns to his high school alma mater—the fictional James Buchanan High in Brooklyn, New York—to teach an often unruly group of remedial wiseguys known as the "Sweathogs" (the nickname reflecting the fact that the remedial classes were held on the very top floor of the high school).