I'd say there's a grain of truth there. To my knowledge we as a nation are one of the top spenders on 'education', but the lion's share of that goes to administration; useless bureaucracy and middle-management types looking to justify their existence who therefore come up with ever more bullshit for the actual educators to deal with. Simultaneously the teachers get rather shit pay for the amount of bullshit they put up with, from admin, parents, and students alike.

So if you're competent in your field, you have little incentive to get into teaching besides the goodness of your heart... or activism. An activist will put up with low pay to achieve their goals. An activist will almost certainly idealogically align with the overpaid, overeducated administration. An activist knows the value of getting to the kids early while their minds are still forming and poisoning them with D.I.E., Marxism, and all the rest.

I don't think that, at this point, throwing more money at it could fix the issue. I think education needs to be further decentralized: more homeschooling, private schools, even pooling resources and hiring a good teacher to 'homeschool' the kids in your neighborhood could work. Just make it easier to not be stuck in the government school system.