The old Patriot District comprised eight schools: Annandale, Lake Braddock, Lee, South County, TC Williams, West Potomac, West Springfield and Woodson.
In the 2013-2014 VHSL realignment Lee was dropped reducing the new Conference to seven schools.
TC Williams and West Springfield have all-weather artificial turf fields. TC Williams is the only school in the Northern Region that does not have lights. Therefore, its JV and Varsity games are typically played at the same time, Varsity at TC Williams and JV at Witter Park in Alexandria.
Here is a link to a Patriot District history article in Wikipedia.
Here are links to the athletics home pages for the Patriot Conference schools