It's already happening now. I suspect we will see this accelerate in the next 5-10 years. Soon the only "white" public schools that will be left will be in rural districts like in Wyoming.
Not because of this, but because they were run by lunatics.
I can't imagine why any white parent would put their kids in public schools now, other than normalcy bias, or that they just love the material crap they can buy themselves for the cost of private school tuition.
Prince Edward County Va. after the first wave of court ordered integration.