Or rather, lack of "charter schools," https://www.washingtonpost.com/blogs/answer-sheet/wp/2015/09/06/charter-school-law-funded-by-bill-gates-in-washington-state-ruled-unconstitutional/
Charter schools in Washington state have been ruled not eligible to receive public funds, essentially since they are not public schools. I'll admit to being mostly disappointed with the Charter School movement myself. For me, much of my worry is the underlying assumption that the REAL problem with public schools is that they are just not using their money correctly, that is, if you give the same funds to someone else, then they can just crunch the numbers and do better. Well, first of all, walk into a public school room in Philadelphia with too many students, an inexperienced teacher and crumbling walls and tell them that they have enough. See how that goes. Also, though, I think the justices in this case have hit upon the issue of accountability that goes very deep with charter schools. There isn't the public oversight of a school board or other truly public safeguards, so we risk money going to things like 6 to 7 figure incomes for Charter CEO's or managers. https://www.washingtonpost.com/apps/g/page/local/dc-charter-school-executive-salaries/1606/
If nothing else, I'm hopeful this leads to a change in culture such that the public expects more of a role in the management, of and decisions to renew or not, charter schools.