C. Diane BishopC. Diane Bishop is an American politician who served as the 16th Superintendent of Public Instruction for the state of Arizona from 1987 to 1995 as a Democrat.Early lifeBishop was born in Elmhurst, Illinois, on November 23, 1943.CareerBishop served as Arizona's 16th Superintendent of Public Instruction from 1987 to 1995 as a Democrat, succeeding Carolyn Warner and preceding Lisa Graham Keegan.