To the OP, No, linking property tax to education spending is not optimal, in my opinion.
In general, I think that linking any government income to any government spending is mostly a political solution to a financial problem.
In CA there is/was some tobacco tax that funds(ed) anti-smoking efforts - why should the amount spent on a health improvement and education program be related in any way to the amount gained from a sin tax? Only for political justification, not for any real budgetary reasons. Was the amount of the tax effective while not being overly expensive for the poor who can’t quit? Was there another option for the sin-punishing or tax revenue? Was the amount of money spent optimal for the benefit? Could the smoking reduction funds have been used better elsewhere, or would 50% more money have made it 100% more effective?
I know that this is how compromises are pushed through. An objective view might see linking of the amounts between certain income sources and certain budget items as sometimes arbitrary. Even where the tax and program link is logical, it might not be the best way to determine the tax level, or the spending level for the two things.
In CA we have prop 13 (passed in 1978-ish), Partially, it reduces taxes for people that have lived in the same home for a long time by not reassessing the value until it is sold. OK, nice to give a tax break to mostly older people, but why does this particular subsidy cost schools any money? Prop 13 also limited property taxes to 1%. There are other sources of funds for Education in CA, but prop 13 has been pointed at as a major reason that school funding has been lower than it could have been.
As an example of where a tax for a specific program gets abused in a different way, in the 80s, SS taxes were raised, and the “extra” money was put in a “trust fund”. In reality, the extra income was just used to lessen the need to borrow from the public for federal deficits over the past 30 years (around $6 trillion total). So the earmarked extra SS money that we were “putting under a mattress” for all these years has not really been saved, and that difference has in fact been a regressive tax on the working class.
Back to property taxes going to education: In the case of a factory getting a no-property tax deal, I don’t think it is right that the schools have to pay for an employment program through nearly invisible reduction of the schools’ income, without that being publicly discussed. If the state wants to give the new venture an incentive to move in, then do it on budget and call it “job opportunity program”. If the state wants to reduce education spending then that should be in the state budget too.
So I guess my argument is this: Linking a tax to funding for a project leaves it open to backdoor manipulations, and links spending to income where good tax policy and budget priorities could indicate different amounts for both the tax and the project fund.