Edward Jackson was the head coach for Howard University and two other schools for how long
Edward Jackson (American football):  He was the head coach at Delaware State University, Johnson C. Smith University and Howard University, altering his tenures among the three schools over the course of 23 years. Howard University: Howard University (HU or simply Howard) is a federally chartered, private, coeducational, nonsectarian, historically black university (HBCU) in Washington, D.C. It is recognized by the Carnegie Foundation as a research university with high research activity and is accredited by the Middle States Commission on Higher Education.
23 years