From an essay in Inside Higher Ed by AAU President Hunter Rawlings:
The combination of drastic state disinvestment in public universities, student careerism, and pedagogical failings of our own has serious consequences for the country. To take one significant example, we now know that more than 50 percent of the students starting college with a stated desire to major in science or engineering drop out of those majors before graduating.
We can no longer blame this problem entirely on the nation’s high schools. A substantial body of research demonstrates conclusively that the problem is frequently caused by poor undergraduate teaching in physics, chemistry, biology, math, and engineering, particularly in the freshman and sophomore years. Students are consigned to large lecture courses that offer almost no engagement, no monitoring, and little support and personal attention. The combination of poor high school preparation and uninspiring freshman and sophomore pedagogy has produced a stunning dearth of science and engineering majors in the U.S. Our country now falls well behind countries like China and India in turning out graduates with strong quantitative skills.
According to the Organisation for Economic Co-operation and Development, the U.S. in 2009 ranked 27th among developed nations (ahead of only Brazil) in the proportion of college students receiving undergraduate degrees in science or engineering. As a result, American students are a dwindling proportion of our graduate enrollments in science and engineering. An administration report not only states that foreign students are earning more than half of U.S. doctoral degrees in engineering, physics, computer sciences, and economics but also estimates that the United States, under current assumptions, will in the next decade under produce college graduates in STEM fields by one million.