The 2010 Western Illinois Valley South conference has 6 member schools: Calhoun (Hardin) Warriors, Carrollton Hawks, Greenfield-Northwestern (Greenfield) Tigers, North Greene (White Hall) Spartans, Pleasant Hill-Western (Pleasant Hill) Wolves, Winchester West Central (Winchester) Cougars. Winchester West Central moved from the Western Illinois Valley North Conference and inherited Bunker Hill's schedule, which left for the Prairie State Conference this year.