 Hoofnagle was appointed to the Fairfax County School Board in 1962 to represent the Centreville District by Supervisor Stuart T. DeBell.In 1964, Hoofnagle became chairman of the school board, a position he would hold until 1969.In November 1969, Chairman of the Fairfax County Board of Supervisors Frederick A. Babson resigned, citing his frustration with the low pay of $10,000 per year for the part-time office.