[programjames]

My experience at an American university (in the early 2020s) was that the native Americans were much less impressive than the international students, and the professors were mildly annoyed at them compared to previous generations of students they had taught. I think this is a common experience at American universities nowadays—I mean, what else would you expect with the primary/secondary school decline?—but I do not have any hard data to show you. I think you can find a lot of similar anecodotes on r/professors, though it seems to be more of a complain-subreddit than representative of all professors.

I think it is difficult to find data on this, as there are not many international assessments at the university level. You can look at research output, but research is kind of bullshit these days, and even if it weren't, it would be skewed by the older generations. You can look at international competitions, but does America do poorly in the ICPC because they're worse, or because they don't care? Brigham Young University (a small-fry religious school in Utah, USA) got a bronze medal a decade ago, significantly better than their other universities. If you investigate a little further, you'll find this university did decent at the Putnam around the same time, so they probably just had a few students who really tried hard. It's known that MIT dominates the Putnam, but that is now literally a self-fulfilling prophecy. I know many math people who chose MIT above other schools because it is the place Putnam winners go.

One thing you can look at is the graduate body composition. At elite universities, around 40% of graduate students are foreigners (compared to 30% 50 years ago). Across all universities, nearly half of PhDs are awarded to foreigners. However, this does not really prove American undergraduate students are falling behind, and it mildly supports the case that American universities maintain their prestige. I actually believe American universities do still maintain their prestige, just that they are more of a paper tiger than Americans like to believe. Almost like MIT with the Putnam, everyone goes to America because everyone goes to America.

Well, that plus a ton of investor money floating around. The dollar hegemony is still going strong, and while the invasion of Venezuela shows it might be a little weaker than the average American hopes, they're not going to let it go away without a fight.