China has the largest proportion of 25-34 year-olds without upper secondary education across OECD and partner countries …

„China has the largest proportion of 25-34 year-olds without upper secondary education across OECD and partner countries. […] 64 % of 25-34 year-olds have not completed this level, far above the OECD average of 15%.“

OECD (Hrsg.), „Education at a Glance 2018. People’s Republic of China“ (2018), S. 1f

In Österreich sind es hingegen nur 11 %. (Quelle: OECD (Hrsg.), „Education at a Glance 2018“ (2018), Table A1.2)