If you were to split texas into black, white and hispanic, each individual pool would be among the best. The reason that TX is rated so low is simply because of the demographics, not because of the quality of the teaching.
Also, when you factor in spending, TX does more with less.
Isn’t saying its demographics the same as saying its genetics or culture?
You excuse the poor results with “demographics”. It still boils down to the genetics underlying the demographics. You can fix that with more money.