Shanghai: „The total time spent on extracurricular learning per week amounts to 17.1 hr. According to the PISA 2015 Survey, students spent an average of 3.2 hr on science, 3.8 hr on mathematics, 3.1 hr on language learning, 3.1 hr on foreign language, and nearly 4 hr on other subjects.“
Wenjie Yang u. a., „Post-PISA Education Reforms in China: Policy Response Beyond the Digital Governance of PISA“. In: „ECNU Review of Education“, 2019, Vol. 2(3), S. 302f