Rocky Run Middle School (Cluster 7, Grades 7-8) is a public middle school in Fairfax County, Virginia. As of September 2007, the school accommodates 814 students. Being a GT (FCPS Gifted and talented program) magnet school, it is fed by many elementary schools, including Brookfield, Bull Run, Greenbriar East, Greenbriar West, Poplar Tree, Willow Springs, Mosby Woods, and Centreville.