We are going to try a skip plus subject acceleration this year. Again, going for the "least worst" option. The thinking of the admins and GT coordinator (and we generally agree) is that DS will be in a classroom environment that will allow more easily for the differentiation, but staying with similarly-aged but still a bit older peers for the "social" and behavioral aspects and expectations. Ability-wise he would need to be skipped 3-4 grades, which just isn't feasible. But likewise going into his intended grade would be a disaster.