Everywhere you look today you’ll find profits prophets of doom bemoaning the quality of our public school system.

We’ve got too many failing schools, they say. The only thing to do is to invest in private and privatized institutions – vouchers, charters, ANYTHING but public.

But as education professors Christopher and Sarah Lubienski wrote in their landmark book “The Public School Advantage: Why Public Schools Outperform Private Schools” there’s little evidence behind the hype. Public schools are far from perfect, but even given their deficiencies, they have benefits that far outweigh those of privatized schools. Indeed, market-based educational reform, wrote the Lubienskis, is “increasingly a belief system rather than a policy theory.”

Privatized schools are sometimes great at boosting standardized test scores, but when it comes to authentic indicators of student learning, they often fall well behind their traditional public school counterparts.

And when you…