Also, when education funding happens on the county level we end up having wildly different standards of education depending on if your county is where rich people live or not - everyone wants to demand the best for their own children, but I think it's pretty settled that children, who don't have freedom of movement and aren't viewed as fully rationale agents, should have access to good education regardless of who their parents are and where they choose to live.

Differing county education funding was a real and evident problem when I was growing up in Massachuesettes in the 90s - some areas (like Wellesley) had extremely well funded schools due to local taxes while other areas had far too many students for the funds they collected. This, in part, lead to a whole big thing involving student busing[1] which was honestly pretty awful for the students that rode several hours to attend suburban schools - even if they did end up in a better funded district it was a cheap patch that avoided the real issue.

1. https://www.theatlantic.com/education/archive/2019/04/boston...