Because my son is accelerated 5 years he doesn't really have a social network at school. In his words "It's just not cool to hang out with the little kid". But he does have good realtionships as far as being part of group projects etc. For honest friendships, we look outside of school. He has a few good friends that understand him and like to hang out. I foster those relationships.
My son believes that as he gets older, the kids at school will be more willing to spend time with him. He thinks that for now they are too busy trying to garner status and image. Once they figure out where they fit, they'll stop worrying so much about what people think.