The Concorde District became the Concorde Conference (VHSL Conference 5) beginning with the 2013-2014 school year Current members are Centreville, Chantilly, Herndon, Oakton, Robinson, and Westfield. All have all-weather turf fields.
Here is a Wikipedia link to Concorde District history.
Here is a link to the Digital Sports Concorde page
Here are links to the athletics home page for Concorde schools. Contact Info link generally includes hot line number, address, and DSA contact information.