Don't make the assumption that throwing more money at teachers will improve our schools. Zuckerberg tried that with little success, as have many before him.
I'd rather a focus on ensuring every kid has a healthy meal at the table. A support group who's invested in tbe individual kids success. A family that encourages and supports during the best and worst of times.
Arguably the "advantage" well to-do middle class families get.
https://www.sciencedirect.com/science/article/abs/pii/S00472...
Oddly, parents ability to work is actually beneficial towards kids ability to eat regularly and healthy. Especially for poor famillies.
Of course investing into the future (kids and environment) has the biggest long-term impact and should be top priority.