Allison Benedikt, over at Slate, wrote this:

You are a bad person if you send your children to private school.  Not bad like murderer bad—but bad like ruining-one-of-our-nation’s-most-essential-institutions-in-order-to-get-what’s-best-for-your-kid bad.  So, pretty bad.

And this:

[I]t seems to me that if every single parent sent every single child to public school, public schools would improve.  This would not happen immediately.  It could take generations.  Your children and grandchildren might get mediocre educations in the meantime, but it will be worth it, for the eventual common good.

Plainly, given her demonstrated ability to think, she must be a product of just such a public school education.

Oh, wait—proudly so:

I went K-12 to a terrible public school.  My high school didn’t offer AP classes, and in four years, I only had to read one book.

It just doesn’t get any clearer than this.