After graduating from La Crosse, Harring coached high school football at Ladysmith High School in Ladysmith, Wisconsin (1958–1962) and at Lincoln High School in Wisconsin Rapids, Wisconsin (1963–1968).
After graduating from La Crosse, Harring taught high school football at Ladysmith High School in Ladysmith, Wisconsin (1958–1962) and at Lincoln High School in Wisconsin Rapids, Wisconsin (1963–1968).