Marais des Cygnes Valley High School is a member of the Lyon County League. All together, there are 8 schools in this league. They include the following:
- Southern Coffey County
At the October 8, 2007, meeting of the USD 456 school board, the board moved to join the Lyon County League for Junior High, beginning with the 2008-2009 school year.
Below are links to other area schools: