PISA 2018: „The countries where student co-operation was most prevalent, relative to competition, were Austria, Croatia, Denmark, Georgia, Germany, Japan and the Netherlands, whereas the countries where student competition was most prevalent, relative to co-operation, were Brazil, Brunei Darussalam, Ireland, Jordan, Korea, Malta, Morocco, New Zealand, Saudi Arabia, Singapore, the United Kingdom, and the United States.“
OECD (Hrsg.), „PISA 2018 Results. What School Life Means for Students’ Lives“ (2019), S. 122