The city I live in here in Texas has a racial breakdown of almost exactly 30% white, 30% hispanic, and 30% black. Yet the public schools (especially the elementarily) are nearly 100% minority because nearly all the whites either send their kids to private school or home school.
But if you only looked at the public school enrollment data you would think that whites were going extinct.
I see what you mean; here in NJ we’re much more segregated (once towns became 20% black, they quickly became 99.9% black; that happened decades ago). Because private schools are expensive here, and parents can’t afford them on top of the public school taxes (which they have to pay anyway), whites had to leave “diverse” areas.
There has been a steady exodus of “Anglo-Americans” (who barely have children anymore anyway) from NJ, fleeing the high taxes, high unemployment, and high “diversity”; in my personal experience this demographic doomsday is much closer than the 2043 nonsense peddled by a media determined to prevent a reaction. Once whites (especially childless ones) realize they are footing the bill for masses of non-whites, they look for alternatives.
The town I grew up in was 99% white. I left in 1972. Now it is 99% Hispanic and looks like Mexico. I don’t believe there are many white kids left to homeschool.