[vezzy-fnord]

I'd rather the public decides which propaganda our young generation's minds get poisoned with rather than a billionaire with uncertain motivations.

How are the public's motivations exempt from uncertainty?

(This is a false dilemma, anyway. The educational prospects of the poor in public schools are already bad, regardless of any action undertaken by Zuckerberg. I also find your implication that private school investment somehow "crowds out" public schools to be highly dubious. The real solution is abandoning the traditional schooling model entirely.)

[ant6n]

The claim is that high-quality private education undermines the quality of public education. If everybody with connections, power and money has their kids and grand kids in a private school, then there's little incentive for those who could affect change to actually fix the public school system.