From Wikipedia:
The Mid-American Conference (MAC) is a collegiate athletic conference with a membership base mostly in the Great Lakes region, stretching from Massachusetts to Illinois. Its members compete in National Collegiate Athletic Association (NCAA) Division I. For football, the conference participates in the NCAA's Football Bowl Subdivision. Nine of the thirteen full member schools are in Ohio and Michigan, with single members located in Illinois, Indiana, Massachusetts, New York, and California.
The MAC is headquartered in the Public Square district in downtown Cleveland, Ohio, and has two members in the nearby Akron area. The conference ranks highest among all ten NCAA Division I FBS conferences for graduation rates.