Colorado Rocky Mountain School Share: Schools Colorado Rocky Mountain School Visit Website Request Info 500 Holden Way Carbondale, CO 81623 (970) 963-2562 LinkedIn Facebook Twitter Instagram YouTube About Map About Colorado Rocky Mountain School, founded in 1953, is a coeducational boarding and day school in Carbondale, Colorado. CRMS educates roughly 175 students in grades 9 through 12. What's Nearby? Distance: 5 10 15 20 25 50 mi.