That is the topic of my latest Bloomberg column, here is one bit:
Or consider Nigerian-Americans, Nigeria being the most populous nation in Africa. Their education levels are among the very highest in the U.S., above those of Asians, with 17 percent of Nigerian migrants having a master’s degree.
Economist Edward Lazear suggests a simple experiment. Consider immigrants to the U.S. from Algeria, Israel and Japan, and rank them in order of most educated to least educated. The correct answer is Algeria, Israel then Japan. Although that’s counterintuitive at first glance, it’s easy enough to see how it works. If you are Algerian and educated, or aspire to be educated, your prospects in Algeria are relatively poor and you may seek to leave. A talented, educated person in Japan or Israel can do just fine by staying at home. These kinds of considerations explain about 73 percent of the variation in the educational outcomes of migrants.
Do read the whole thing.