The following lists Missouri high schools and the athletic conferences in which they compete. Under the current system used by the Missouri State High School Activities Association some conference member teams may also compete in the same playoff district while others are in districts with non-conference members. As a general rule most conferences contain schools within their region and of similar class size, the class based on school enrollment.

Archdiocesan Athletic Association (AAA)

Big 8

Big Springs Conference

Black River League

Bootheel

Carroll-Livingston Activities Association (CLAA)

Central Activities

Central Missouri Activities (CMAC)

Central State 8

Central Ozark

Clarence Cannon

Departing members are in red.

Brookfield will join the Grand River Conference for the 2024-25 season.

Crossroads

The Kansas members of the conference withdrew to form a new league within the Kansas State High School Activities Association.

Eastern Missouri

Four Rivers

Frisco

Gasconade Valley

Gateway Athletic Conference

Golden Valley Vernon

Grand River

Great Plains

Greater Ozarks Conference (GOC)

Greater Kansas City Suburban Conference (GKCSC)

Harrison-Daviess-Caldwell (HDC)

Highway 275

Interscholastic League (Kansas City)

Interstate-70 (I-70)

Jefferson County Athletic Association

Kansas City Interscholastic (KCI)

Kaysinger

Departing members are in red.

Tipton will leave the Kaysinger Conference for the new Central State 8 Conference for the 2024-25 season.

Lewis & Clark

Departing members are in red.

In the 2024-25 season, Fayette and Harrisburg will leave this conference along with Eugene, Linn, New Bloomfield, Russellville, and South Callaway from the Show-Me Conference to form a new Central Missouri conference. The conference will be called the Central State 8 Conference.

Marceline will leave this conference to join the Grand River Conference.

North Shelby will cease being an independent school and join the Lewis and Clark Conference in the 2024-25 season to make up for the loss of members.

Mark Twain

Metro Catholic Conference (MCC), St. Louis

Metro (Kansas City) Christian Athletic Association

Two former members, Heritage Christian Academy (Olathe, KS) and Cair Paravel Latin (Topeka, KS) are now full members of the Kansas State High School Activities Association.

Metro League

Metro (St. Louis) ?? League

This League appears to be defunct.

Metro Women's Athletics Association (MWAA)

Mid-Lakes

Midland Empire

Mid-State

Mineral Area Activities Association (MAAA)

Mississippi Valley

Missouri River Valley

East Division

Carrollton and Richmond have been conference members since its founding in 1928. Lexington joined in 1934 and Lafayette County (Higginsville) in 1937.

West Division

Grain Valley left the conference at the end of the 2017-18 school year and joined the Suburban Kansas City Conference. Warrensburg replaced Grain Valley.

Center and Clinton were added beginning in the 2020-21 school year.

Excelsior Springs departed after the 2021-22 school year and followed Grain Valley to the Suburban Conference.

North Central Missouri Conference

Ozark 7

Ozark

Ozarks Foothills

Ozark Highlands Conference

Platte Valley

Polk County League

Public High League (PHL)

Scott-Mississippi

Show-Me

Show-Me Central

South Central Association

South Central – AA

Southeast Missouri (SEMO)

Boys & Girls Basketball

Girls Volleyball

Southwest Central League (SWCL)

Southwest Conference

Stoddard County Activities Association (SCAA)

Suburban St Louis

Summit

Tri-County–Central

Tri-County–North

Tri-County–Southeast

Western Missouri

White River

Independents

The following lists schools that are independents, meaning they do not belong to or compete in any of the athletic conferences above. However they do compete against other schools in Missouri (and sometimes surrounding states) on a non-conference basis. Independents are included in the MSHSAA playoff system based on a District assignment separate from any athletic conference.

Departing members are in red.

See also

• List of Missouri state high school football champions
• List of Missouri state high school baseball champions
• List of Missouri state high school boys basketball championships
• List of Missouri state high school girls basketball championships
• List of Missouri state high school girls volleyball championships

References

• To verify each school's conference at the MSHSAA link, click on the school name. The conference information is included in each school's profile.