It was formed in the winter of 1924 and was the direct successor league of the DuPage County Conference that expired the previous year.

Old DuPage County members Hinsdale, Glenbard, York, Downers Grove, and West Chicago, joined with Maine to form a new league.

In 1935, Lyons Township (LaGrange) joined the league, and the following year West Chicago dropped out.

This took place between the conference and the Des Plaines Valley League with a vote of the Superintendents from the Inter-Suburban Association.

Their final names were not arrived at with the intention of ranking one ahead of the other, but came from the color of hair of the athletic directors in each division.