Professor Pringle joined the law faculty in September 1979, a few months after ending a 22-year career as a member of the Colorado judiciary. From 1961 until his retirement from the court he served as an associate justice of the supreme court of Colorado. He was chief justice from 1970-78.
At the law school he directed the unique legal research and writing program which has now been incorporated into the Lawyering Skills Program. He has also conducted mediation and arbitration hearings.