Rhea County High School is a high school in Evensville, Tennessee. It serves Rhea County, Tennessee, which includes Dayton, Spring City and Graysville. It has an enrollment of 1,469. Its mascot is a golden eagle. It is a part of Rhea County Schools.

Rhea County is a county located in the U.S. state of Tennessee. As of the 2020 census, its population was 32,870. Its county seat is Dayton. Rhea County comprises the Dayton, TN micropolitan statistical area, which is also included in the Chattanooga-Cleveland-Dalton, TN-GA-AL combined statistical area.