Once the world leader in college degree attainment, the U.S. now trails international competitors on this metric among millennials. South Korea, on the other hand, which roughly tied the U.S. for college educated young adults in 2000, has far eclipsed the U.S. to claim the top spot for the most educated young adult population. And South Korea is far from alone, other top-performing systems saw similar gains. Read more about how these gains were made in CIEB’s South Korea’s Education System profile.