Oh ok, I am sorry. It's not like a 5-second search didn't show exactly what I said: a study for both sides.
Big winners are from Auglaize, Cuyahoga, Delaware, Franklin, Hamilton, Jefferson, Medina, and Portage counties.
www.cleveland.com
Look at this list in the link above. Take notice of the school's districts on the first page in comparison to the last 2-pages. Will there be exceptions like Steubenville (Kudos to Big Red) on that 1st page? Yes, there will be. By and large, will most of them have similar demographics? Yes, they will. Look at the pages 6 & 7. Will you find similarities between most of those schools? Again yes.
The top Pennsylvania school districts based on Niche's 2019 list.
www.pennlive.com
Here are PA's (my home state) rankings, the top 20 are very wealthy areas. The rest of the top 75 are mostly middle-class schools that still have strong parental involvement. No poor districts with high percentages of single-parent homes are in the top 75. That does not mean you cannot succeed coming from a poor, single-family home, but it is harder for sure. That is why a school district of mostly UMC 2-parent homes generally ranks higher. For you to argue otherwise is absurd.
My initial post may have been too strong against administrations and teachers, but that does not mean that parents who make up the district, are not the biggest reason if a school is considered good or not.