Fifty years ago, in my youth, this was not the case in most mid-western cities.
Most schools with a majority percentage of black students had some tough accomplished black teachers. Additionally, the home life did not allow such decline.
What changed? The Great Society reshaped culture, taxes, welfare, schools, academics, crime prevention, and the family. This is the result in some areas.
Thank you LBJ. How many wasted billions for the great society? The dems could have solved glo-bull warming by now with all that green. LOL!