Having lived in New Hampshire for almost 30 years, I have seen the development of this tax issue.
The NH Supreme Court found in the NH Constitution a requirement upon the State that had curiously gone unnoticed for almost 200 years. This oversight was ascribed to justices much more eminently qualified than the confederacy of dress-up clowns and drooling socialist morons that currently constitute the NH SC.
If the authors of the NH State Constitution thought that someone would be able to torture and twist their words so as to "discover" a requirement to implement Marxist collectivist-redistributionist, centralized, tax-funded government-run, indoctrination day camps, they would have challenged that someone to a field of honor, or torn the constitution to shreds and re-written it in words simple enough for the ACLU lapdogs currently occupying the NH SC to understand.
The NH SC risibly found that the State had a responsibility to provide "fair funding for an adequate education", whatever that's supposed to mean. Of course, these terms are subject to vastly varied shades of interpretation and provide great fodder for endless litigation. A boon to the state's legal industry, and to the ACLU and socialist lackeys in particular.
Particularly humorous, in a dark sort of way, is that no matter how much funding you feed the state education monster, it is never, ever, EVER enough. If everyone in the state gave them their whole paychecks, they would still be bleating for more.
In the meantime, in order to fund this state-imposed, state-controlled indoctrination system, the state now controls how the towns implement the "property tax". Of course, wringing every last nickel out of the tax payer becomes the main object of this bureaucratic excess, and every little reason they can think of to squeeze you harder will be employed.
Despicable tyrants, all of them.
Amen, and amen.