Jim MacLean was the Head Coach of the Concordia Thunder Men's hockey team for 17 seasons, beginning in 1992-93 and retired after the 2008-09 season. During that period, his teams made the playoffs in 16 of 17 seasons, and he led the Thunder to 1 ACAC conference championship in 2002-03. Under Jim's leadership, the team also won ACAC silver on 1 occasion (2008-09) and bronze twice (2003-04, 2007-08). Jim is a two-time recipient of the ACAC Men's Hockey Coach of the Year award (2000-01, 2002-03).
In addition to being the hockey program's first and longest tenured coach since Concordia joined the ACAC in 1992, Jim was regarded as an excellent instructor for various courses within the campus teaching community and was dedicated to the academic performance of his student-athletes.
The alumni of the Thunder Men's Hockey program regard Jim as one of the most influential people in their lives, and many of those relationships between Jim and his former players remain to this day.