After a recent trip to California, visiting with friends and family- once again everyone's biggest concern/question about homeschooling was about how the kids were being "socialized"
It is so funny that they would even ask as almost every one of those same people spent a lot of time praising me and the kids for how well behaved, nice, fun the kids were- LOL!

Anyways here is an interesting study that relates...
http://www.cnn.com/2009/HEALTH/05/15/mother.children.social.skills/index.html