A columnist in Pennsylvania reports that the billionaire Koch brothers are disappointed by Governor Tom Corbett.

They feel that he didn’t push his voucher bill hard enough, so they are planning a major advertising campaign to put pressure on legislators.

There is no reason for them to pay attention to the unimpressive results of twenty-one years of vouchers in Milwaukee, where kids in voucher schools got no better test scores than their peers in public schools. And no reason to pay attention to vouchers in D.C., where there were no test scores gains in either math or reading.

What matters most is to break the public education system.