Washington state pools property tax money and then redistributed it equitably across the state to pay for education on a per pupil basis. This mainly means poorer eastern Washington districts are subsidized by richer western Washington districts, and districts that lose students to private schools take a direct hit in their funding.
It doesn't help when the Seattle school superintendent told parents that if they didn't like their school policies, they could leave.
NJ is even more extreme, the poor districts get more funding and it's been that way for decades https://en.wikipedia.org/wiki/Abbott_district
This is true many places. But I think the "property tax explains everything" talking point is going to persist a long time, because it's very convenient.
This is the same as California.
EDIT: I was wrong, and explain it as a comment below.
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