> "good schools" are much more about the kids and families than the teachers.
Is this a euphemism for "it is really about being around people who are white"? Another commenter here used similar language to this and, once we drilled down into the nitty gritty, it turns out that is what was being said. "White flight" is certainly a thing.
Admittedly, where I am only 2% of the population are visible minorities. You can live anywhere your heart desires, in any school district, and you are, for all sake of practicality, only going to find white people. Perhaps this is why the concept you present seem so foreign to me?
I think I was pretty explicit about what that means: the discrimination is more around class. My local school is one of the best in the state for example, and is ~60% "white" vs. ~80% for the local population. In fact the stats I see indicate that every racial minority group has higher representation within the student body than within the wider city. The more relevant factor is that a bunch of doctors, lawyers, engineers, etc. live in the area. There are no homes in the area for under $1M, and many are $5M+. There is no multi-family housing. 1% of the students qualify for the income-based free lunch program.
The spending per student is below average and lower than nearby worse schools, so it's not that the rich people have a higher tax base to create better schools. It's that the professional class takes for granted that of course their kids are going to take every AP class. They want their kids' friends to have that attitude too, and they expect the school to offer AP everything. If it doesn't, they won't live there.
"Buy the cheapest house in the most expensive neighborhood" is an adage here for aspirationally upwardly mobile people. So basically use your money to mix with higher classes rather than on material goods (and put your kids in school with the highest class group you are able to).