That’s a WONDERFUL idea!!! Sounds very similar to vouchers.
We’ve only been talking about that, here, forever! We’re willing to settle for the amount that we pay in school taxes, be refunded/vouchered.
Now, how to you propose to get legislatures (local/state) to pass this idea?
(That’s where the cheese always get bind-y.)
I recommend refundable tax credits over vouchers because refundable tax credits are more a parents-controlled thing whereas vouchers could become a government-controlled thing.
As to getting legislatures to institute them, it is all about standing together, speaking up, making a clear case, and not taking no for an answer.