So long as you can afford, choose the best schools that you think it will be suitable for your kids... if can't afford, no need to pursue looking for private schools.
And, i think it is a bit meaningless to mention or highlight how much tax you are paying... same rule applies to whether you choose to give birth at public hospital or private hospital....
Anyway, good luck and i think all of us as parents will choose the best for the kids, no matter what kind of schools they go... the most important is whether you spend time with your kids...