Do foreign students affect the likelihood that domestic students obtain a STEM degree and occupation? Using administrative student records from a US university, we exploit idiosyncratic variation in the share of foreign classmates in introductory math classes and find that foreign classmates displace domestic students from STEM majors and occupations. However, displaced students gravitate toward high-earning social science majors, so their expected earnings are not penalized. We explore several mechanisms. Results indicate that displacement is concentrated in classes where foreign classmates possess weak English language ability, suggesting that diminished in-class communication and social interactions might play an important role.

Science, technology, engineering, and mathematics (STEM) workers are fundamental inputs for innovation, the main driver of productivity growth. We identify the long-run effect of STEM employment growth on outcomes for native workers across 219 US cities from 1990 to 2010. We use the 1980 distribution of foreign-born STEM workers and variation in the H-1B visa program to identify supply-driven STEM increases across cities. Increases in STEM workers are associated with significant wage gains for college-educated natives. Gains for non-college-educated natives are smaller but still significant. Our results imply that foreign STEM increased total factor productivity growth in US cities.

We highlight a lesser-known consequence of China’s integration into the world economy: the rise of services trade. We demonstrate how the United States’ trade deficit in goods cycles back as a surplus in U.S. exports of education services. Focusing on China’s accession to the World Trade Organization, we show that Chinese cities more exposed to trade liberalization sent more students to U.S. universities. Growth in housing income and wealth allowed Chinese families to afford U.S. tuition, and more students financed their studies using personal funds. Our estimates suggest that recent trade wars could cost U.S. universities around $1.1 billion in annual tuition revenue.