Fair point about nebulous goals. To be honest, I don't the school has thought it out beyond, "Let's see how it goes."
And in re-reading the OP, I think I've made a mistake, because my DD's math pull-out was a daily experience, and that was her math class. If your DS is only being pulled out twice a week, that's not a different math class, and therefore deserving of its own tier. That sounds like enrichment.
I don't know of any good reason why a qualified child couldn't have both. In most schools the enrichment class is multi-grade anyway - is this the case?
