Why I have no use for the achievement gap

Jay Matthews:

I don’t mean this as a criticism of my talented colleague Bill Turque. He was reporting the news, as usual. But I did not like the focus of his otherwise irreproachable Sunday story on the achievement gap not narrowing in the D.C. schools.
Turque was letting us know that despite the growth in D.C. math scores, the gap between black and white students had gotten larger for fourth-graders. This was an important topic in education circles, so he had to report it.
But I think the achievement gap is useless as a measure of school improvement, and we would be much better writing about how much each ethnic group, each school, each child is improving, or not improving. Our gap fixation puts us in a very awkward position.
You see it. It’s simple. It forces us to hope that white kids, or middle class kids, or high achieving kids, don’t improve.