 After the Cooper School, she taught at the John Hay (1953–55), Laurelhurst (1955–56), and Sandpoint (1956–58) elementaries and finally at Meany Junior High School (1958–1973).At Laurelhurst, she was responsible for successfully challenging several rigid school traditions, including assigned seats in the teachers' room, and a very strict system for distributing school supplies.Besides serving as a teacher and working with the NAACP, Dewitty served on the Washington State Board Against Discrimination (WSBAD) and on the Board of Theater Supervisors for Seattle and King County.