Amy Stuart Wells, professor at Columbia Univ., disses charter schools and my older daughter replies (and her defense is noted by Joanne Jacobs and Eduwonk).

I can't resist adding one comment to Katie's admirable defense. Professor Wells writes,

"In this decade of growing free-market disillusionment, policymakers should amend state laws to better support the high-achieving charter schools and close the rest."

Speaking for myself and perhaps on behalf of many charter-school supporters, I wholeheartedly endorse this proposal, with one qualification: policymakers can do that when they do exactly the same thing for regular public schools.