zim
I agree with ya.
My mother used to read to me every night and when I started the first grade she told me that she was not going to read me any more bed time stories, that I was going to have to learn to read for myself. I did.
Some times it's the parents and sometimes it's their peers. If a black kid tries to do the right things to be successful he will be accused of "acting white". His chances of being killed by one of his friends are better than his chances of dying of old age. Then ya gotta consider the leaders of his community in politics, sports, and the media who tell him constantly that he is a victim and cannot succeed. He is being programmed for failure.
...BTW: I have a stack of a couple hundred children's books that I have read to my grandkids many times. If I have to read Green Eggs and Ham one more time I think I will die. They are in the top tier of their class and one of em was advanced ahead a grade.
...their mama home schooled em all the way thru grammar school too.
Neither me nor decomp believe it is a case of some students being smarter than others. It is a case of cultural infanticide.

Liberals are like a "Slinky". Totally useless, but somehow ya can't help but smile when you see one tumble down a flight of stairs!