So high scoring schools have a large white population followed by asians.
That’s the formula.
I think the scores are BS. I see the the school that my wife was teaching at ranked in the 7 range. I used to have to help her grade papers and there’s no way those kids could score higher than the 2 range. My wife has taught at 3 other elementary schools, teaching 3rd grade, so i know moron 3rd graders by their work.