The older they get, the more they find their peer group. One of the first big natural sorting processes seems to be when they start band (in my area in 5th grade) the kids seem to find a few more kids they relate to. Along with that comes band parents, more of who understand and relate to your child and raising such children.
Other activities that help both kids and parents find their peer group for us have included:
ELP / GT classes
STEM Club
The local gaming store
Wings Classes (We live within driving distance of Belin-Blank)
National Honor Society
Science National Honor Society
