Thanks for that link, which led me to this link: opinionjournal.com
It explains a lot. Within communities and in comparing countries.
<Intelligence in the Classroom
Half of all children are below average, and teachers can do only so much for them.
BY CHARLES MURRAY
Tuesday, January 16, 2007 12:01 a.m. EST
Education is becoming the preferred method for diagnosing and attacking a wide range problems in American life. The No Child Left Behind Act is one prominent example. Another is the recent volley of articles that blame rising income inequality on the increasing economic premium for advanced education. Crime, drugs, extramarital births, unemployment--you name the problem, and I will show you a stack of claims that education is to blame, or at least implicated.
One word is missing from these discussions: intelligence. Hardly anyone will admit it, but education's role in causing or solving any problem cannot be evaluated without considering the underlying intellectual ability of the people being educated. Today and over the next two days, I will put the case for three simple truths about the mediating role of intelligence that should bear on the way we think about education and the nation's future.
Today's simple truth: Half of all children are below average in intelligence. We do not live in Lake Wobegon.
Our ability to improve the academic accomplishment of students in the lower half of the distribution of intelligence is severely limited. It is a matter of ceilings. Suppose a girl in the 99th percentile of intelligence, corresponding to an IQ of 135, is getting a C in English. She is underachieving, and someone who sets out to raise her performance might be able to get a spectacular result. Now suppose the boy sitting behind her is getting a D, but his IQ is a bit below 100, at the 49th percentile.
We can hope to raise his grade. But teaching him more vocabulary words or drilling him on the parts of speech will not open up new vistas for him. It is not within his power to learn to follow an exposition written beyond a limited level of complexity, any more than it is within my power to follow a proof in the American Journal of Mathematics. In both cases, the problem is not that we have not been taught enough, but that we are not smart enough. ... continued... >
Mqurice |
