15 Weird Facts About Welcome Back, Kotter (1975) You Never Knew

15 Weird Facts About Welcome Back, Kotter (1975) You Never Knew From a show banned in Boston to the President calling them "Groundhogs," this beloved '70s sitcom hid bizarre secrets behind every classroom door. An 86-year-old comedy legend arrived but was too frail to film, actors in their late twenties played teenagers, and a theme song saved the series from a terrible title. Here are 15 weird facts you didn't know about Welcome Back, Kotter (1975).