I still wonder why the IAS says all bets are off when the child is against the skip. I would give more value to this with an older child, but in early elementary, I would lean toward the parent and school staff knowing what's best.
Because - hold on to your hats - the 'end user' child of the IAS is most likely not a PG kid. The target audience of IAS is Optimally and Highly Gifted kids.
Ah, well that makes sense. I think it's easy to forget that the IAS is not written just for PG kids to take advantage of, because unfortunately, usually the only way you're going to convince a school to skip your child is if he's so way out there that they have to agree that regular grade progression isn't appropriate.
