„Between 2014 and 2017, more than 5.3 million asylum seekers arrived in OECD countries and over 50 % of those arriving in Europe were aged 18-34. […] Many have missed out on periods of formal schooling and have a weak understanding of the host country’s educational system in general, and the VET (Anm.: Vocational education and training) system in particular, which varies substantially between countries.“
OECD (Hrsg.), Unlocking the Potential of Migrants (2019), S. 12f.