One other advantage that Connections would have for you is fluidity. Math is decoupled from the rest of the curriculum, so that would be an area of individual placement, effectively. She could effectively use the Connections program as a "bridge" to accelerate a year, and not have to actually "skip" anything.
I asked the CA people about curriculum compacting back in February, and never got a very clear answer on that. (It's possible that it's too late to get in for the coming year - they say they need applications by 3/31 to get the inter-district transfer.) But it's good to hear that someone had a good experience with them.
