Abilene Cooper has played in only two state championship football games in school history, and Allen was involved in both. He played on the Cougars’ teams that reached the state finals in football in 1967 and baseball in 1968, and he then coached Cooper to the state football finals in 1996. Allen compiled a 154-56-6 record in 19 seasons at Ballinger, Brownwood and Cooper before leaving for Dallas Highland Park, following the 1999 season. Allen led Highland Park to the Class 4A, Division I state football title in 2005. He is a past president of the Texas High School Coaches Association.