Conference champions from all three leagues advance in each sport to post-season competition in the North Coast Section's Division V bracket, of which the winner gains admission to the Class A state championship tournament.

Similarly Lower Lake High School holds a 2A classification from the CIF but was granted a standing exemption to compete in a Class A conference as to do otherwise would require an excessive amount of travel.

Comprising nine schools in the state's B classification, some field incomplete or non-competitive teams while other, former members have been consistent in winning and have succeeded in being promoted into the NCL I.

Most schools within NCL III are small mountain towns located around the redwood forests near Mendocino County, some of which lack the student interest necessary to field a complete team each year for most sports.

The CMC offers an array of sports; Swimming, Football, Soccer, Basketball, Baseball, Softball, Wrestling, Volleyball, Tennis, Track and Field, Cross Country, and Golf.