Jane Addams also sponsored the work of Neva Boyd, who founded the Recreational Training School at Hull House, a one-year educational program in group games, gymnastics, dancing, dramatic arts, play theory, and social problems. At Hull House, Neva Boyd ran movement and recreational groups for children, using games and improvisation to teach language skills, problem-solving, self-confidence and social skills. During the Great Depression, Boyd worked with the Recreational Project in the Works Progress Administration, (WPA) as The Chicago Training School for Playground Workers, which subsequently became the foundation for the Recreational Therapy and Educational Drama movements in the U.S. One of her best known disciples, Viola Spolin taught in the Recreational Theater Program at Hull House during the WPA era. Spolin went on to be a pioneer in the improvisational theater movement in the US and the inventor of Theater Games.