These tests are culturally biased that is the only acceptable PC answer to the 'other' minorities non-performance.
Funny how Americans of Asian Origins don't have a NAAAP (National Assocication for the Advancement of Asian People), 比赛 Bǐsài ("The Race" in Chinese), Asian Caucus, Asian Tigers (or Panthers if you care) and Asian this group and Asian that group; are EXEMPT from preferial treatment in college applications (unlike Latinos and Blacks); have been victims of racist pograms in the US (in fact much worse than anything against the the Blacks and Hispanics); yet they always excel as a whole and succeed as a whole greater than everyother group (in fact in second place is another victim of past discrimination in this country - the JJJOOOSS). In fact, as a whole they out-perform whites, have higher literacy rates then whites, lower crime rates, lower incarceration rates and they do better in education, math and science.
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Asians do well on all tests which shows the dismal black performance on all standardized tests is NOT due to culture bias. Blacks are just mentally inferior.
Speaking tongue and cheek buddy. The culturally bias FAUX argument is the one always given by liberals when minorities do worse on standardized tests like the SAT, ACT, LSAT, firefighter certification license etc.! It's a BS argument.
However, I don't subscribe to the Blacks are genetically dumb argument. I think it has to do more with liberal policies that have destroyed the inner city school systems, created a culture of public dependency on scraps from the table (welfare) and fatherless homes, a black culture that doesn't emphasize education as the best way out of poverty, a black culture that puts too much emphasis on sports and entertainment as the way out (when statistically speaking that is a LONG-SHOT), a black culture that placates criminal local celebrities (like the rich drug dealers and pimps) and a black culture that promote kill the rat mentality and fight at the slightest provocation.