As for the inevitable objection that vouchers would result in the takeover of private education, have no fear. In the worst case scenario, the situation would revert to the status quo ante. Parents who objected to intrusive gov't regulations would simply found non-voucher-redeeming private schools, and we'd be back where we started. But that's the worst case scenario. There is every reason to believe that both conservatives AND liberals would fight tooth and nail to prevent the gov't takeover of schools that they have a strong vested-interest in. Right now, liberals and conservatives fight against EACH OTHER for the control of their children's schools. If both groups had their own schools they would each fight THE GOV'T instead.
I'd say it's more accurate that the liberals/secular humanists HAVE control of the public schools, and fight to keep ANY conservative ideology out.
DON'T SACRIFICE YOUR CHILDREN ON THE PAGAN ALTAR.