Before taking the reins at NCA, Coleman spent five seasons (2003-2008) as the head men's basketball coach at Kingwood College in Kingwood, Texas. He led the Coyotes to the 2007 and 2008 Lone Star College Conference Championship while amassing an 83-58 overall record. Coleman was also the head coach of the AAU Lady Cardinals out of Kingwood from 2005-2010, leading the team to the 2005 National Championship and the University of North Carolina Team Camp championship. Several of his former players went on to play in colleges to included Colorado State University and Clarke University. In 1995, he became involved with international basketball, coaching the men's team on the USS Harlan County. His team traveled the Mediterranean Sea, competing against teams from France, Spain, Italy, Africa, Israel, Turkey and Greece and compiling a 16-0 record. Coleman was the head college coach for the Hampton Roads Naval Reserve Officer Training Corps (NROTC) team in 1991 and 1992, compiling a 39-5 record. The team, which consisted of players from Old Dominion University, Norfolk State University and Hampton University, won the 1991 Eastern NROTC championship at the University of North Carolina, Carmichael Gymnasium. "To coach a championship basketball game on the same floor as Hall of Fame Coach Dean Smith had coached his teams was a once-in-a-lifetime experience," recalled Coleman. Coleman founded One on One Basketball Training and is also the author of "One on One, How To Teach Your Child Basketball." His coaching philosophy is rooted in a phrase he coined, "Winning is Temporary, Learning is Forever." He believes that if you teach the game correctly, winning will follow.
After retiring from the Marine Corps, Coleman made up his mind he wanted to be a collegian basketball coach. Coleman not only accomplished it on the men’s side but also on the women’s side as well. His last collegian coaching position was at AIB College of Business. Before going to AIB he spent the three previous seasons as the head girls' basketball coach and director of athletics at Northeast Christian Academy (NCA) in Kingwood, Texas. During his tenure with the Lady Warriors, the program posted a 45-18 overall record and made back-to-back trips to the second round in the Texas Association of Private and Parochial Schools (TAPPS) 2A State Tournament in 2011 and 2012. The team posted three consecutive winning seasons during that span and also finished as the San Marcos (Texas) Tournament Champion in 2011.