[1] Clinton and North Scott have, along with Central DeWitt, competed in Class 4A for girls sports (in volleyball, basketball and softball, which used the five-class system).
Davenport North opened its doors in 1985 and was immediately admitted to the newly renamed MAC.
The teams were switched to district play in the fall of 2014 with Pleasant Valley being the last MAC football champions.
The Illinois teams are Moline, United Township (of East Moline), Rock Island, Rock Island Alleman, Geneseo and Galesburg, all representing the Western Big 6 Conference; the other participating team is Riverdale of Port Byron, Illinois.
Starting with the 2017-2018 season, a dual team wrestling tournament between metro MAC and Western Big Six schools was started, with the state winner determined by the average dual meet score from schools from a given state.
In March, after the conclusion of the state basketball tournaments in Iowa and Illinois, an all-star game consisting of the area's top senior players is played at Augustana College, with seniors from primarily the MAC matched against their counterparts from the Western Big Six.