Region 6A North came into existence for the 2013-2014 school year as part of a massive VHSL realignment.  At inception, Region 6A North included Conferences 5, 6, 7, and 8.  Conferences 5, 6, and 7 retained their old Distrct names as Concorde, Liberty and Patriot, respectively, even though membership in the latter two changed.  Conference 8 consisted of the Prince William County schools that were members of the Cedar Run District.  It is anticipated that Conference 8 will be retitled the Cedar Run Conference.

The Northern Region was one four AAA regions in the Virginia High School League structure.  Effective school year 2013-2014, the three-tier State structure---AAA, AA,  A---was replaced by a new six-tier structure.  Northern Region schools were allocated to either of two new Regions, 6A North and 5A North, depending on school enrollment.

Here is a link to the former Northern Region website which was still used for school year 2013-2014.  It is uncertain what will replace the old Northern Region master schedule.

Here is a Wikipedia discussion of the history of the Northern Region.