Grayson County High School was established in 1974 after the three high schools throughout Grayson County were consolidated. The county originally had one high school in each of its major communities: Clarkson High School (Red Hawks), Leitchfield High School (Bulldogs), and Caneyville High School (Purple Flash). Today, each of these communities has an elementary school (Leitchfield has two) which all feed into one county middle school and high school. To appease the various communities who had just lost their high schools, GCHS was located in a central location, and the colors and mascot were neutral of the old colors of the original schools.
