It finds that when schools get more money, students tend to score better on tests and stay in school longer, at least according to the majority of rigorous studies on the topic.

No kidding. 🤦‍♂️ Education is so vastly underfunded across the board even small increases in money will have a net positive effect. Is there some amount of diminishing returns? Sure. But we are so far from that end of the spectrum one can only hope and dream that would be actually be a problem.