We are being vague here about "quality" and "average", by in the US, about 15% attend 2-year junior colleges, and about 50% attend 4-year colleges.

About half of those 4-year college students are earning degrees that are mostly filler and would be 2-year colleges plus remedial and/or fluff courses. USA has a very weird college industrial complex.

China, meanwhile is undergroing a massive push to send a majority of the population through some form of college or another.