You still have yet to exhibit a post where I state the belief that "black people are not as clever as white people" or that "white people are not as clever as asians" [1]. (Note: I'm not asian. Am I racist against myself?)

You have, however, exhibited two posts where I explicitly state that I don't know the cause of the school performance gap and that cultural factors are one possible explanation. But I guess that those are part of my secret plan to appear non-racist, right?

Seriously dude, get a grip. There are far fewer secret racists out there than you think, and I'm basically the last person to be secretive about his views. If I thought blacks were, e.g., genetically less intelligent, I'd clearly state my hypothesis and link to data backing it up.

[1] Unless by "clever", you mean "do better in school". If that's what you mean, then I'm guilty as charged - just like PISA, TIMMS, the College Board, etc.