Since there's something like 100k public schools in the US, with very different performance and governments in charge, I don't think people here are really in a position to judge someone's parenting choices over the internets.
Also by the way, public universities run about 12k/year, so they may well have their children in public school.
A school being private doesn't magically make it great. It has to still work hard for that. A public school being good requires hard work too. But let's be honest, usually it boils down to parent involvement which is usually fueled by economic status. Rich(er) people have time and/or resources to actually be involved in their kids lives. They also tend to have fewer kids so more time/resources per kid. The initial thing a private school does these days is pool the rich(er) cohort of kids together.
I live in a part of my city known as the 'private school corridor' because there are so many. And, the public schools are notoriously horrible in the city's ISD. So, it's pretty much required if you have the means. The other alternative is to move to a suburb (different ISD), but even those are pretty easily seen as correlating good school districts with high home prices. Yet, I've seen studies in my area that say if everyone sent their private schooled kids to the public schools they would average out and be pretty well rated. But it's a first mover disadvantage to do so, so nobody does.
I also live in the south and this whole private school thing really started during integration, so there's that whole issue to contend with too. The impacts of red lining and white flight are pretty stark here. I don't think it's the motivating factor for most people any more, but inertia.
This is why our public schools have stats like "5% white" and "86% low income" on Great Schools. 5% white seems really low, the city is ~56% based on another google search.
More commonly, to pay other people to be involved.
Does he have some sort of generalized anxiety? Like it or not, an inability to take tests is going to negatively affect his life.
And I have no idea how much freedom Americans have to choose which public school to send their kids to.
By comparison, all Dutch schools receive the same funding, whether public or private, have roughly the same quality and are subject to the same standards, and people are mostly free to choose which school to send their kids to. (I think in Amsterdam, some primary schools have a certain postal code area from which they accept students, and for secondary schools there's a massive ranked lottery system where a small percentage of kids do not end up in one of their top-3 preferred schools.)
Sort of.
Per Wikipedia:
The largest source of funding for elementary and secondary education comes from state government aid, followed by local contributions (primarily property taxes)
As a side note, my city passed a $70 million dollar bond to build a new elementary and middle school. The school is currently ranked in the bottom 5% in the state.
Also:
Schools in the United States spend an average of $16,993 per pupil, which is the 7th-highest amount per pupil (after adjusting to local currency values) among the 37 other developed nations in the Organisation for Economic Co-operation and Development (OECD)
$3,000 seems like a bargain by comparison.