Broad Run High School

Broad Run High School is a public secondary school in Ashburn, an unincorporated area in Loudoun County, Virginia, United States. Broad Run is part of the Loudoun County Public Schools system. It was ranked as the #1 Best Public High School in Loudoun County and the #9 Best Public High School in Virginia by U.S. News in 2020.

Originally a rural school serving all of eastern Loudoun County, the growth of the county's population beginning in the mid-1990s has resulted in systematic reduction of Broad Run's attendance area as it spun off eight of the district's high schools from within its original boundaries. Initial surroundings of farm fields have been replaced by housing tracts and the school now possesses one of the most culturally diverse student populations in the region.