As of 2021, it is the largest high school in the Greater Austin area by student enrollment.

Round Rock received national attention for its 1994-95 yearbook, believed to be the first ever released in CD-ROM format.

[4] In 1996–97, the baseball team won the 5A state championship, defeating Lubbock Monterey by a score of 7–1 in the tournament final.

[6] The Round Rock Dragon Band and Color Guard is a musical ensemble made up of wind and percussion instruments.

The band has also attended 6 BOA Grand Nationals marching competitions:[7]