Of the state in which they live, black people are usually poor. This means that there is not quality education. Here you have the whole reason. African Americans living in America and having wealthy and educated parents is highly successful.
And they still need that "affirmative action" bullshit to pull off "success".
As an argument that it is not I would like to remind about the US President Barack Obama. He is African American but highly educated. He's smarter than many white people. Now look at the white Trump and those who voted for him.
