From a column by Bloomberg writer Cass Sunstein:
If the conclusions generalize, the lessons are clear. College teachers aren’t to blame. American students aren’t uninterested in science, nor are they ignorant of the professional opportunities that a degree in this field could bring. Many of them would like to major in science and plan to do so. But when they are disappointed by their own performance, they switch. The impediment is a lack of high school preparation.