Briar Woods High School opened on August 29, 2005 with its student body coming from Stone Bridge High School, Loudoun County High School, and Eagle Ridge Middle School.[2] The first Principal was Edward Starzenski, who served as principal of Loudoun County High School from 1989 to 2004. The school was officially dedicated on October 14, 2005 at a ceremony presided over by school district superintendent Edgar B. Hatrick III.[3] In 2006, Briar Woods celebrated its first Homecoming, despite the lack of a returning class.
During the summer before the 2011-2012 school year, ten trailers were installed due to an increased enrollment for the year. The following school year, a new order of lockers were put in the school in order to accommodate the rising number of students attending the school. In the 2014-2015 school year, Students living in Loudoun Valley Estates and most of Brambleton were shifted to Rock Ridge High School to relieve overcrowding. This dropped Briar's enrollment by about 500 students.
In 2023, a new addition was put on the back of the building. This eliminated the need for the ten trailers.
In 2011, Briar Woods was recognized by Newsweek as one of America's best high schools. It was ranked 1st in Loudoun County, 4th in the state of Virginia and 112th in the country. In 2016, it was ranked the 10th best school in Virginia and is currently unranked in the National Ranking.
Athletics
Briar Woods is a member of the Potomac District and competes in Region 5D of the Virginia High School League.[4]