I'd like to know about acceleration with these options too. I think my state may only offer K12. This is our out if kindergarten is a massive fail next year. I gave DS the K12 grade 2 reading placement exam the other day and he got every question right (I probably should have given him the next one up, but anyway...he did hesitate over a couple). Would they place him as easily as me reporting scores, or is it much more difficult than that?