Well, sure, but first semester performance is also a good predictor of second semester performance. And second semester of third, and so on. But more to the po

Well, sure, but first semester performance is also a good predictor of second semester performance. And second semester of third, and so on. But more to the point: If you do poorly in your first semester and drop out, then it doesn’t really matter if the SAT would have done a good job of predicting your second semester performance.