Shelbyville High School is a public high school located in the unincorporated community of Shelbyville, Texas, USA and classified as a 2A school by the UIL.

It is a part of the Shelbyville Independent School District located in southeastern Shelby County.

In 2015, the school was rated "Met Standard" by the Texas Education Agency.

[2] The Shelbyville Grady Clays compete in these sports - [3] Volleyball, Cross Country, Football, Basketball, Powerlifting, Track, Baseball & Softball