I really feel for you - it can be very tough when other children start being nasty. From my experience of UK children I would agree not to approach the children or the school and to try to ignore them (much easier said than done!).

Can you explain to your DS that it is unusual that he can do what he does and that it can make older children feel jealous and insecure and that it is best to take no notice of them.

I'm afraid I can't be much help as I haven't encountered a situation like this, maybe someone else here has some experience..

XX