„Across OECD countries, 39 % of students are enrolled in schools that offer a science club (Anm.: in Österreich nur 5 %) and 66 % attend schools that offer science competitions (Anm.: in Österreich nur 31 %).“
OECD (Hrsg.), „PISA 2015 Results (Volume II): Policies and Practices for Successful Schools (2016), S. 59