For someone who has considered the subject at length a few times, it's no startling insight that the differences between Asians and blacks/latinos is cultural and genetic. The fact that black and latino culture are creating a sort of crab mentality, and that as well, their cultures don't value academic achievement is the elephant in the room. As well, it might be controversial, but intelligence has a genetic component, and Asian immigrants are subject to very intense scrutiny from the immigration offices. It isn't outlandish at all to suggest that Asian children, as first and second generation immigrants, are just genetically more intelligent than the blacks/latinos who aren't subject to selective pressure which pushes for intelligence by immigration, having already been in the country for generations. Of course, you won't hear anybody discussing the genetic components of intelligence affecting scholastic achievement, because of course, The Bell Effect was very controversial, and American society nowadays happens to at large believe in a fanciful notion of tabula rasa, and nature being overwhelmed by nurture.
I got a 2200 without studying. I could easily get a 2400 with studying. Just because you put forth much more time than the norm to master a test which isn't an accurate measure of your intelligence doesn't mean that you're intelligent.
http://www.neatorama.com/2006/12/26/carhenge/