The DuPage Valley Conference (DVC) is an organization of six high schools in northeastern Illinois, representing seven communities in Chicago's suburbs. These high schools are all members of the Illinois High School Association. The Conference, organized in 1975, exists primarily for inter-school athletic competition in 21 sports. There are also four non-athletic competitions in which DVC schools participate: Chess, Math competitions, Scholastic Bowl and Speech.
The Upstate Eight Conference is an organization of ten high schools in northeastern Illinois, representing ten communities in Chicago's suburbs. These high schools are all members of the Illinois High School Association.
Auburn High School is a public high school located in Rockford, Illinois, US, housing close to 2,000 ninth- through twelfth-grade students living in the Rockford school district.
The Independent School League (ISL) is an athletic league comprising 10 private secondary schools in the Chicago metro area. All but one of the schools are also full members of the Illinois High School Association, the governing body for most high school athletics and competitive activities in the state. The schools are all relatively small, most belonging to the smaller classes of competition offered by the IHSA.
The Northern Illinois Conference (NIC-10) is a high school athletic conference consisting of nine high public schools and one Catholic school in Illinois' Boone, Stephenson, and Winnebago Counties. Member schools are also full members of the Illinois High School Association (IHSA), and are among the larger schools in that area, all competing in Class AA of IHSA competitions.
The Chicago Catholic League (CCL) is a high school athletic conference based in Chicago, Illinois, United States. All of the schools are part of the Illinois High School Association, the governing body for Illinois scholastic sports. While some of the schools are coeducational institutions, the conference only supports athletics for male teams.
The Metro Suburban Conference (MSC) is an organization of four high schools in northern Illinois, representing seven communities in that part of the state. These high schools are all members of the Illinois High School Association. The conference began competing during the 2006–07 academic year, with four schools from the former Suburban Prairie Conference East Division.
The Suburban Christian Conference was a system of Christian schools in Chicago's suburbs organized to compete against each other athletically.
The East Suburban Catholic Conference (ESCC) is an athletic conference consisting of 9 Catholic high schools in the suburbs of Chicago, Illinois. The conference became independent in 1974.
The Three Rivers Conference, also known as the TRAC-8, is a high school conference in northwest Illinois. The conference participates in athletics and activities in the Illinois High School Association. The conference comprises small public, and two private, high schools with enrollments between 200-600 students in portions of Bureau, Henry, Lee, Rock Island, and Whiteside counties.
The Northwest Upstate Illini Conference is a high school conference in northwest and north central Illinois. The conference participates in athletics and activities in the Illinois High School Association. The conference comprises 20 small public high schools and one small private school, with enrollments between 60-340 students in Carroll, Jo Daviess, Lee, Ogle, Stephenson, Whiteside, and Winnebago counties.
The Tri-County Conference is a high school conference in north central Illinois. The conference participates in athletics and activities in the Illinois High School Association. The conference incorporates 8 small public and 2 small private high schools, with enrollments between 82-428 students in LaSalle, Livingston, Marshall, Putnam, and Woodford counties.
The Big Rivers Conference of Illinois was a high school football-exclusive athletic conference that existed from the 1999 through the 2012 football season. Upon its dissolution, it comprised ten teams located in the northwest and north-central portions of the state. It was a member of the Illinois High School Association, and its sister conference for other sports was the Three Rivers Conference. As of the 2013-14 school year, in tandem with a conference expansion, Big Rivers has been reabsorbed into the Three Rivers Conference. This expansion negotiated full membership status for member schools in all Three Rivers Conference sports, thereby negating the need for a football conference carve-out.
The Upstate Illini Conference (UIC) was a high school conference in northwest and north central Illinois. The conference participated in athletics and activities in the Illinois High School Association. The conference included small public and private high schools with enrollments between 75-1,000 students in Bureau, Boone, Carroll, DeKalb, Jo Daviess, Kane, Lee, McHenry, Ogle, Stephenson and Winnebago counties.
The Northwest 8 Conference was a high school conference in northwest and north central Illinois. The conference participated in athletics and activities in the Illinois High School Association. The conference included small public high schools with enrollments between 75-600 students in Boone, Carroll, DeKalb, Jo Daviess, Lee, Ogle, Stephenson, and Winnebago counties.
The Four Rivers Conference was a high school conference in north central Illinois. The conference participated in athletics and activities in the Illinois High School Association. The conference included small public high schools with enrollments between 150-550 students in Boone, DeKalb, Lee and Winnebago counties. The conference was named for the 4 rivers that ran through its geographic area, the Rock River, Pecatonica River, Kishwaukee River and Sugar River.
The SHARK Conference was a high school conference in north central Illinois and south central Wisconsin. The conference participated in athletics and activities in the Illinois High School Association (IHSA) and the Wisconsin Interscholastic Athletic Association (WIAA). The conference included private and public high schools with enrollments between 75-2,000 students in Boone, DeKalb, Lee, McHenry, Stephenson and Winnebago counties in Illinois and Rock in Wisconsin.
The Northeastern Athletic Conference is a high school conference in northeast and north central Illinois. The conference participates in athletics and activities in the Illinois High School Association. The conference comprises 3 small public high schools and 9 small private school, with enrollments between 19 and 850 students in Cook, DeKalb, Kane, Kendall, LaSalle, McHenry, and Winnebago counties.
The Chicago Prairie Football League is a high school football only conference in northern Illinois. The conference participates in the Illinois High School Association. The conference includes five small public and three small private high schools, with enrollments between 150 and 950 students in Cook, DuPage, LaSalle, Livingston, and Will counties.
The Private School League within Illinois