Interstate Eight Conference

The Interstate Eight Conference (Interstate 8 or I–8) is an athletic conference of Illinois high schools that are members of the Illinois High School Association (IHSA). Despite the conference name, the conference currently has 12 member schools that compete in 12 different sports (boys' basketball, girls' basketball, girls' volleyball, boys' golf, girls' golf, football, boys' soccer, girls' soccer, wrestling, baseball, softball, and track and field).

The Interstate Eight began in 1979 and originally had eight schools—Coal City, Dwight, Plano, Reed Custer, Sandwich, Seneca, Wilmington, and Yorkville. In 1991, Yorkville was replaced by Lisle. In 2006 Herscher, Manteno, Peotone, and Westmont joined the conference. Despite the conference growing from eight to 12 teams, the conference name remained Interstate 8. Dwight left the conference prior to the 2014–15 season while Streator joined the conference.

Most of the member schools are in rural/smaller towns. Westmont and Lisle are suburbs of Chicago but enrollments are small in size. Westmont's population is divided between the varying schools in the area, including high schools in Darien, Woodridge, Hinsdale, Bolingbrook, Naperville, Lisle, Lombard, and Glen Ellyn. Lisle's enrollment is small, due to Lisle's relatively small size as a city, as well as being located East of Naperville, which has at least four high schools in the immediate vicinity, as well as the Glenbard schools and Wheaton-Warrenville South all being within a close proximity to the high school.

...
Wikipedia