Even so, the answer to our poor public school performance is not to provide the system with reduced resources. How much might be needed is an open question, but the solution is definitely not less. School vouchers will only take desperately needed funds out of the system. If vouchers were a good thing and would truly allow anyone to be able to attend private school then we should just give everybody one and let every child attend a private school. Vouchers will not make it anymore likely or affordable for anyone to attend a private school.
Private schools are businesses and they run on supply and demand, plain and simple.
They will be under no obligation to hold costs down or reduce the price to accommodate voucher students. To the contrary, they are motivated to make as much profit as possible. The effective price may even increase due to increased demand for a limited supply. Private schools are not prevented from discriminating as public schools are. Even if one has a voucher and the money, there is no guarantee that his child will be accepted to a private school.