Years ago the authors of the Bell Curve described how the gap between the bright and not-so-bright was increasing. The smart kids were marrying other smart kids and so on down the line. This is no surprise.
The comment that the SAT is a poor predictor is probably correct. The SAT predicts that the low scorers on the test will do better than they actually do. That's because of regression to the mean.
true enough
but a few years back (80’s?)when many states installed their educational reform programs they began to take away from the college bound, assigning poor students to same classes, removed competition, etc. For instance in the local middle school they stopped the Math Count competitive teams and other similar events. One state canceled the yearly spelling bee, but there was such a hue and cry they backed off. According to this new philosophy they would remove all sports, if they could.