One in ten students at the master’s or equivalent level is an international student in OECD countries, rising to one in four at the doctoral level. Almost 60% of international doctoral students in OECD countries are enrolled in science, engineering or agriculture. The United States hosts 38% of international students enrolled in a programme at the doctoral level in OECD countries. Luxembourg and Switzerland host the largest proportion of international students, who make up more than half of their total doctoral students. International master’s and doctoral students tend to choose to study in countries investing substantial resources in research and development in tertiary educational institutions. Of all international students enrolled at the master’s or doctoral level across OECD countries, the majority (53%) are from Asia, and 23% are from China alone.