I don't think "throwing money" at the problem is a great idea. I think using research to figure out how to get the most out of what money you can use, applying it to the places where it's needed, is probably a start. I can't imagine a material advantage in the purchasing power argument for the poorer districts because you're talking about a percentage point difference, i.e. 1000 bucks in a rich district spends like 1000 bucks, in a poor district it spends like 1200, the advantage is only $200, just to use round numbers. If the rich areas don't need that assistance, I don't get why it would be given, just for the appearance of fairness? To kids who are born into a great advantage through absolutely nothing but their own luck? I'd rather take the 2000 bucks that spends like 2200 altogether, 1000 of which is probably going to go to getting a new barista in the fancy schmancy teachers lounge and give it to the poor district where it can spend like a $2400 advantage, not a $200 one. Seems a better investment.
The problem here is we can't get anywhere until we get the rich kids onboard.
Every fair funding proposal is opposed because if we pool all of the money and split it evenly, then everyone gets $12,000 per pupil.
Currently, the wealthier public schools are getting $20,000 per pupil so they're going to scream bloody murder.
The only way I can see to do this is to say, "EVERYBODY GETS THE SAME VOUCHER".
Fair is fair. Title 9. It has to be simple.
The rich kids are free to hold a bake sale if they are desperate for more money.