If you home-school a child well there is not really a difference. If you send your child to LOCAL clubs then they will meet new people. Also if the club is local they can meet the people they have met. Try and get them to play outside (possibly a park) so they have the chance to meet new people. REMEMBER NOT to force them to make friends or keep on at them (pressuring them) they are more likely to make friends with just a bit of gentle encouragement.
Myrab51