Founded in 1909 , the Rocky Mountain Athletic Conference is the fifth oldest active college athletic conference in the United States , the oldest in NCAA Division II , and the sixth to be founded after the Michigan Intercollegiate Athletic Association , the Big Ten Conference , the Southern Intercollegiate Athletic Association , the Ohio Athletic Conference , and the Missouri Valley Conference . For its first 30 years , the RMAC was considered a major conference , equivalent to today 's NCAA Division I , before seven of its larger members left in 1938 to form the Mountain States Conference , also called the Skyline Conference
Skyline Conference
Skyline Conference (1938–1962)
Rocky Mountain Athletic Conference