Isn't this obvious result? The Russian School of Mathematics could manage to teach 10-year old kids basic algebra. And there's AOPS, there's Think Academy, and slew of local tutoring schools who can teach kids relatively advanced maths. Let alone many private schools. If I have the means, why would I not send my kids to such schools and therefore fuck up the funding of the public schools? Not that I want to, but it furiates me that the school administrators really hurt the kids who need public education the most in the name of equity. It also saddens me that the constituents are okay with such administrators.