In the US, there are upwards of 886,000 international students, primarily from China, India, and South Korea, which together account for about half those students. But the number of students coming from other countries, like Brazil and those in the Middle East, is growing, according to a new report out from the Institute of International Education.

The students, both undergraduate and graduate, are coming for STEM education in particular, which accounts for more than 60% of what they’re studying, according to the annual Open Doors report. And the reasons that each country is sending more students says a lot about its economy, from a growing middle class in China to the need for a diversified work force in oil-rich Kuwait.