Education is a fundamental human right. It needs to be provided to all, including those who can’t afford to pay for it. I view providing it as more important than maintaining some abstract right to non-taxation. Plenty of systems that are suboptimal can still nonetheless add value and I think public education is one of those.

On the funding point, for elementary and high school education the US has a rather poor funding record. It’s only when you include the costs of providing university education that the US is the most expensive. Many US states spend half of what Ontario does on K-12 education and Ontario has a much higher educational attainment.