My DS, just turned 8, is being shunned and ostracised by his group of 'friends' at school. One particular kid seems to be leading it; he goes up to my son when he's talking to others in the group, turns his back on him and leads the others away. He tells DS he's 'dumb' and to 'go away'. DS is left standing alone in the playground.
I have followed advice on bullying in trying to help DS; I have taken his 'friends' to football club together, had them round our house, invited the bully to Legoland with us etc. But it does not seem to have had any effect.
In fact, even more bizarrely, some of the other kid's parents seem to have joined in on the act. I constantly hear of parties that his 'friends' have had that he has not been invited to and trips with them that he hasn't been included in. He pretends to not be bothered but I know he's hurt. And so am I. 
This is so insidious I don't even know how long it's been going on for. What do I do - talk to the parents involved? Confront the kids? Or will this make it worse?
Just reading some of the threads in this topic has helped me feel less alone but I'd really welcome some advice if anyone has some.