The conference participates in athletics and activities in the Illinois High School Association.

The conference expanded yet again in 2015 with the addition of Aurora Christian High School, taking the total to 11 teams.

The following season the conference expanded to its largest total by adding two teams; Schaumburg Christian High School from Schaumburg, and South Beloit High School from South Beloit making a total of 13 teams.

In 2017 the league would shrink back to 12 as Chicago's Luther North High School would close its doors after 108 years of educating students.

This coop would allow Our Lady of the Sacred Heart Academy to join, again keeping the league with 12 members.