Nearly every time we try to fix this problem with money it fails. The problem is not money. All else being equal there is little to no correlation between spend and outcome. Money get's touted by schools and politicatians as a way of pretending to care but not actually do any of the work to improve outcomes.

What does tend to correlate with money and also correlates with outcomes is parental involvement. Solving that problem requires societal and economic change in a district though not giving the school more money.