C.H.
I remembered that you were looking for summer camps.. I thought that I had responded to that but I dont see it listed. .. and then I saw your other email. Socialization is difficult when you move at any age...and it is the million dollar question too. If he went to private school then he maybe his friends there had a different focus and he hasnt found anyone his age like that .. give it some time.. better he not just be friends for the wrong reason.
But also there is a camp that is held at Chestnut Ridge Middle School not far from you called THE SUMMER SPOT...
and one of the best things about the camp is that the children really do learn socialization, and develop great self esteem. They go on trips once a week, sports & water activities, swimming... etc. you can call the director Max McClintock at ###-###-####, and he can have them mail out a packet to you.