The Hockey Referee Assigning Organization (HRAO) is dedicated NCAA Division 3 College ice hockey officiating. The organization is currently servicing 37 NCAA Men Division III Ice Hockey teams and 41 NCAA Women's Ice Hockey Teams:
New England Hockey Conference (NEHC), Men and Women Hockey Leagues, ECAC West Men and Women Hockey Leagues, New England Small Conference Athletic Conference (NESCAC) Men and Women Hockey Leagues,State University of New York Athletic Conference (SUNYAC) Hockey League, Colonial Hockey Conference women's hockey league and Canton College Men.