Earlier quoted context omitted.
Measuring (and funding) schools based on student outcome is fraught because a student's performance / preparedness for the "next level" is not entirely a function of the school. There are other significant parameters, including parental upbringing, home life stability, neighborhood safety, friends, hunger/nutrition, various trauma and abuse, the list goes on. I'm sure it's been studied, but I'd bet "school quality" i…
The number 1 predictor of educational outcome is IQ by a long shot, which is hardly affected by any of the factors you listed. Yes, high IQ kids usually have high IQ parents who are likely to prevent those things, partly because they are likely high income, but none of those are as important as how smart the child is.
That's basically what my upper middle class parents did for me, as the tests were very similar to games I was given since a young age. Of course there are other more important developmental factors like health, stability, and nutrition but those are easier with money too.
Most of HN seem to support a form of modern eugenics.