 After the completion of his career at WMU, Kool returned to coach the WMU men's basketball team as an undergraduate assistant.Starting in the 2011–12 season, Kool served as an assistant coach for the team under head coach Steve Hawkins.After the end of the 2012–13 WMU season, Kool accepted the boys' varsity head coaching position at Jenison High School in Jenison, Michigan.