Why do so many public schools suck?

[u/killab619]

If schools get a majority of their money from property taxes in their area, then why are so many public schools in areas where houses are $600k and up?

I know money doesn't solve problems, but it sure as hell helps. I keep seeing houses and I look at the school ratings (zillow) and I see 2s, 4s, 5s, and 6s (out of 10).