Grandfalls-Royalty High School is a public high school located in Grandfalls, Texas (USA) and classified as a 1A school by the UIL. It is part of the Grandfalls-Royalty Independent School District located in southeast Ward County. In 2015, the school was rated "Met Standard" by the Texas Education Agency.
In 2014, voters approved a $12,200,000 bond issue for constructing a new K-12 school to replace existing facilities.
The Grandfalls-Royalty Cowboys compete in basketball, cross country, six-man football, tennis, track and field, and volleyball. They won a state title in six-man football (6M/D2) in 2013.