DS is in YR1. He has been left out frequently by one very popular boy since about last half term. I hoped a break over the summer would help to resolve things but it's still happening. It's also got worse as other DCs, when around this boy, are telling DS he can't play, to leave them alone. He plays apparently well with these other DCs when not with the one boy.
Today DS was told he couldn't play and in his own words other boy then threatened to slap him round the face if he kept asking. DS and other boy are normally friendly and I've had him round to play a few times and he is a very pleasant child.
So should I talk to the class teacher tomorrow or try to speak to their Mums first?