Public schools aren't a monopoly! Quoting Murphy v. State of Arkansas (1988) at https://en.wikipedia.org/wiki/Homeschooling_in_the_United_States https://en.wiki

Public schools aren't a monopoly! Quoting Murphy v. State of Arkansas (1988) at https://en.wikipedia.org/wiki/Homeschooling_in_the_United_States https://en.wikipedia.org/wiki/Homeschooling_in_the_United_St... "parents have a constitutional right to send their children to private schools and a constitutional right to select private schools that offer specialized instruction." The track record of charter- and voucher-based schools is not better than that of public schools. In some cases, like online charters, it is far worse. Charter school teachers can and do unionize. ("When charter schools unionize, students learn more, study finds" - https://www.chalkbeat.org/2017/9/25/21100993/when-charter-schools-unionize-students-learn-more-study-finds https://www.chalkbeat.org/2017/9/25/21100993/when-charter-sc... ). Education leans towards being a natural monopoly because of the good economy of scale. It is cheaper to run a large high school than a many smaller schools, and that larger school can offer a wider diversity of courses, making it a broader match to the community's needs. A larger school system can also share administrative costs, have a permanent substitute teacher pool, etc. I don't see how charter- and voucher-based schools change that calculus, which means they will merge. Private sector monopolies have an even worse track record than public-sector monopolies like the USPS has for local mail delivery.