Here is a question for the voucher program. Are parent's forced to send their children to schools that is founded on a religion? Or do the parents voluntary send their children to these schools?
As I understand it, parents are the legal guardians of their children. It is up to them to teach the children their value system and the religion (or no religion) of their choice.
What alternative do you propose? State enforced atheism?
> The only way to rid religious schools of the indoctrination--for which they were created and which is one of their main selling points-
Again – were the parents forced to send their children to these schools?
I don't think that it is up to you (or the state) to determine to which school a child should be sent.
Also, bear in mind that as far as private tuition goes – in the university system private universities vastly outperformed public universities in quality. Also check how many of the truly great universities were found as religious schools/backed by religious groups. Would it have been better if the state did not allow private universities? (The following universities had a religious affiliation when it was founded; Harvard, Yale, University of Pennsylvania, Princeton, Columbia, Brown University, Dartmouth college).
As for your comments about educational quality: In my country there exist a private religious schooling group. In all metrics they performed better than public schools. They did this even though they received no money form the state. A few metrics such as pass rate, teacher to pupil ratio, distinctions, drop out rate, etc... is all better than public schools (which are a mess). Children in those school actually got individual attention and academics was the focus point (they sucked in sport though).
One problem they faced was this: their school fees was a little higher than government schools (since they did not have government support). Some parents who had children with learning problems or behavioural problems sent that child to the private school but kept their other child in the public school. It got so bad that they enacted a new policy – a parent must put all his children or none of them in the school.
> --is to close them or transfer them from religious organizations to secular organizations (which is something I fully support).
I suspect that your sentiments in private schools have nothing to do with the quality of the education and everything to do with your bigotry towards religion and religious people. You would have children learn what you feel is acceptable rather than their guardian/parent.