This year i was able to get a grade skip for my DD10. It took having the whole arsenal. Their own SAT testing results, the above grade Explore test results and the fact that they saw she did the whole 5th grade math curriculum in 3 weeks (the grade she skipped). The teachers were supportive but the principal was resistant. We basically said, here is our evidence that she is beyond just "smart", the teachers say she is done with her work in 10 minutes and having to just sit the rest of the hour. We told them as parents, we cannot allow her to go through that another year. So our choices are a grade skip or we are going to have to take her out and homeschool her or take her to a school that will accommodate her abilities. That approach worked for us.