Those of you who are saying that black people should "get over slavery", I wonder if any of you have had to deal with lynchings, police brutality, segregation, jim crow laws, etc. Its true that most of that stuff is in the past but even so those wounds are not yet healed.
And many black people do not have the same opportunities as white people. There are many poorly funded inner city schools out there so its hard for the children who DO choose the right path because the schools can only do so much for them.
Remember that slaves were not allowed to read or write and most only knew simple mathemetics. Pre-slavery African culture was also an oral culture, meaning not much emphasis was placed on written agreements. So the free'd slaves did not at first posess the command of the English language that their former masters had. There were more immediate concerns than education, such as ownership of property, finding sustainable income etc. And when blacks were able to begin a culture of education the had to deal with the seperate but (not) equal system of segregation. Its only within the last 2 generations that schools were intergrated, and even now they are pretty much only integrated on paper.