All schools will be forced to become more attractive to students, more cost-efficient, and more accountable if they are to remain competitive. If a school fails to accomplish these goals, students will leave that school and attend competing institutions that provide a better education. This creates the incentive for a school to offer innovative services, quality facilities, and excellent academics, for if it does not, its competitor a few blocks away will certainly land more students. The market has ways of ensuring superior products are rewarded and inferior products weeded out. A competitive marketplace for education would be no different.
School choice leads to competitive education.
Citizens paying taxes on the money they earn should have some say about how that money is applied. Vouchers and tax credits allow parents to do just that by using some of the money collected in taxes for tuition at their preferred school. They pay tuition to a private school in addition to the taxes they already pay to support government schools. Opponents of school choice often claim that it will destroy the public schools, as they think students will leave for private options. That is an argument for school choice, not against it.