"At least 70% of the acreage… shall be used for school purposes for a period of at least 50 years…Up to 30% of the total acreage… may be used for any lawful purpose…"The agreement allows up to 10.4 acres of the site to be used for economic development. The site is bounded approximately by Leesburg Pike (State Route 7), Haycock Road, and Falls Church Drive (an unsigned Metro access road). It is located adjacent to the West Falls Church Metro Station to the east of the site and exit 66 from Interstate 66 to the west of the site. The site currently contains Mary Ellen Henderson Middle School and George Mason High School, as well as recreational fields and parking lots related to the schools. The VT/UVA Center is adjacent to the properties at the corner of Falls Church Drive and Haycock Road.