Here's NFAA's website:
http://www.nfaa-archery.org/
The NFAA Director for Virginia is James Quarles. He might know more about any NFAA certified instructors in your area than the home office.
jim.quarles@vfaa.org
There is also the United States National Archery Association, the national governing body for our Olympic team. Naturally, they have certified instructors and coaches as well. They also have the Junior Olympic Archery Development program (JOAD) for youngsters.:
http://www.usarchery.org/
Here's a list of JOAD clubs in Virginia. Even if your kids aren't interested in the program, they can probably hook you up with an intructor.
JOAD-Bull Run Spider Shooters
Ruth Rowe
P.O. Box 9224
Mc Lean, VA 22102
571-215-4403
JOAD-Richmond Archery Club
Andrew Stiles
2805 Dover Hunt Place
Richmond, VA 23233
804-389-0812
JOAD-The Kings Archer
Pauline Parkhurst
115 William Road
Ruckersville, VA 22968
434-985-7314
Queen Ann Archers - JOAD
Mary Lecompte
7489 Burnt Tree Drive
Manassas, VA 20111
703-361-4565