> The United States trains the best computer graduates ― by far: We find that CS seniors in the United States substantially outperform seniors in China, India, and Russia. The average computer science student in the United States ranks higher than about 80 percent of students tested in China, India, and Russia. Seniors in elite institutions in the United States similarly outperform seniors in elite institutions in China, India, and Russia by approximately 0.85 Standard Deviations (SDs). Importantly, the skills advantage of the United States is not because it has a large proportion of high-scoring international students.
https://blogs.worldbank.org/education/who-trains-best-comput...
Original paper