I would hold that, for whatever reasons, blacks are not yet receiving effective instruction.-- Gerald Bracey, education apologist extraordinaire, slips in his latest Kappan article (pdf) and finally admits schools have a problem educating blacks.
Of course, we don't really have a problem educating all blacks, we only have a problem educating the lower-IQ ones. We have the same problem educating lower-IQ whites, asians, and hispanics as well. We do a reasonable job, as we've always done though there is ample room for debate here, with the higher-IQ students of all races. It's just that we're not content with merely educating the top third of the IQ curve. We're paying a princely sum in an attempt to educate the bottom two-thirds as well. And, as Jerry has just admitted, schools are not doing a very effective job of it.
In fact, in the few instances where lower-IQ students have received effective instruction (instruction that got them performing as well as average students), that same instruction boosted the scores of higher-IQ students by the same amount.
And, there's good reason to believe that, if anything, higher-IQ students would benefit even more from better instruction:
Figure 5 shows the math performance (in standard scores) of DI students of various IQ ranges (from over 131 to under 71) as they progressed from grade 1 through grade 3. The lines are parallel, suggesting that the same rate of the students in achievement was realized for all students. This outcome is partly an artifact of the priorities of the DI model, because it focused disproportionately on the lower performers, those students less likely to succeed. With more emphasis on the higher performers, their performance could have been accelerated more dramatically.-- From Engelmann's CSSP Acceptance Speech, p. 5.
So, there's good reason to believe that increasing the effectiveness of instruction across the board would lead to a widening of the "achievement gap" between groups, incidentally demolishing another point Jerry was trying to make in his article.
NB: the skillful use of passive voice in Jerry's quote. I suppose it was too painful to write "schools are not yet effectively educating blacks." Kinda like in that episode of Happy Days when the Fonz couldn't admit he was wrong and couldn't even say the word.
Just say it, Jerry, "I was wr-, wr-, wr-."