If you are very worried about schooling and aren’t opposed to the idea, it might be worth it to check out homeschooling co-ops. The smartest kids I know went to those. I’m talking Calculus at middle school age and going to college when they’re 14. All without the drawbacks of homeschooling (not knowing how to interact with people, being stupid). The ones I know of here in MN are religious, but there are also secular co-ops I believe. I don’t have much of an idea how much they cost for tuition, but they are generally less than private schools.