We're also in a free K12 virtual school. It's easy to go at whatever pace you like, as long as they'll let you. Our DS wasn't gifted tested until age 7 in late grade 1. But even before that he was able to complete all of grade K and grade 1 (and grade 2 math) while in grade K. So you shouldn't even need gifted recognition to move at an accelerated pace in a K12 virtual school.