The document discusses international student enrollment trends in the United States, finding that enrollment of foreign students has steadily increased over the past few decades, growing on average 3.4% annually from 1980 to 2013, with the exception of a dip following 9/11 between 2003-2005. It also examines factors like the influence of foreign students on graduation rates and performance of domestic students in US universities, as well as methods used to analyze these impacts through regression analysis of enrollment and degree conferral data. The study aims to understand how the presence of foreign students may generate externalities that affect both teaching performance and time to degree completion for domestic students.