In the too-harshly titled Why the Right Hates Public Education, Barbara Miner posits the real reason why Republicans are behind school vouchers: “Occasionally, Republican strategists let the cat out of the bag and admit that vouchers–which divert public dollars to private schools–are about politics, not education.”
This article is a very interesting read. The article is on The Progressive, which has its own biases. Those biases match mine, so it’s not a big deal for me, but it might be for you.