[hector_vasquez]

In the U.S., around 86% of kids graduate high school[1], around 63% of high school graduates go to 4-year colleges[2], and around 64% of them graduate within 6 years[3].

By that logic around 35% of 24-year-old Americans have bachelor degrees. More than a third, but not by much.

[1] https://nces.ed.gov/programs/coe/indicator/coi/high-school-g... [2] https://educationdata.org/college-enrollment-statistics [3] https://nces.ed.gov/fastfacts/display.asp?id=40

[loeg]

You don't have to reverse engineer it from first principles; the rate is rising over time, lead by under 29s (i.e., current youth): https://en.wikipedia.org/wiki/File:Educational_Attainment_in...