Brown County High School, or BCHS, is a public four-year high school located at 500 East Main Street in Mount Sterling, Illinois, a small city in Brown County, Illinois, in the Midwestern United States.

BCHS serves the communities of Mount Sterling, Ripley, Timewell, and Versailles.

[2][3] The campus is located 40 miles (64 km) east of Quincy, Illinois, and serves a mixed small city, village, and rural residential community.

Their mascot is the Hornets, with school colors of kelly green, white, and gold.

Surrounding communities may have also possessed high schools at some time which were consolidated into the current BCHS.