[BenKenobi]

Take the folks in WI and swap them with TX. They would do better in TX and WI, and would likely be the top in the nation.

Sure, the results could be better, but TX is doing very well. If it were genetics a good system wouldn’t show the improvement that it does here in TX.

[Myrddin]

If you cherry pick your candidates, you can get any result you want. If your results come from testing the whole of a given demographic, you'll get the group results. You might do a little better with a competent educational system, but the "achievement gaps" between the demographic groups aren't going anywhere.