The Ches-Mont Conference is a high school sports league primarily located in Chester County, Pennsylvania. Currently, the league consists of thirteen high schools, divided into two divisions. Twelve of the schools are from Chester County, with one from Delaware County. The schools all compete in varsity high school sports in the Pennsylvania Interscholastic Athletic Association, or the PIAA. Ches-Mont Conference teams compete in District One.

NATIONAL
Avon Grove High School (West Grove)
Bishop Shanahan High School (Downingtown)
Coatesville Area High School (Coatesville)
Downingtown East High School (Lionville)
Downingtown West High School (Downingtown)
B. Reed Henderson High School (West Chester)
West Chester East High School (West Chester)

AMERICAN
Great Valley High School (Malvern)
Kennett High School (Kennett Square)
Oxford Area High School (Oxford)
Bayard Rustin High School (West Chester)
Sun Valley High School (Aston)
Unionville High School (Kennett Square)