Eureka High School - Missouri - was created in 1908.
Clayton High School - Missouri - was created in 1954.
Warrenton High School - Missouri - was created in 1906.
Douglass High School - Missouri - was created in 1926.
Duchesne High School - Missouri - was created in 1924.
Marshfield High School - Missouri - was created in 2001.
Sacred Heart High School - Missouri - was created in 1882.
Missouri State High School Activities Association was created in 1926.
Plant City High School was created in 1914.
City Charter High School was created in 2002.
Michigan City High School was created in 1995.
Gadsden City High School was created in 2006.