„The degree of between-school variance in China‘s PISA results is high and higher than on average in other high-performing systems. This leads to remarkably high levels of segregation and isolation of categories of students. Disadvantaged students are segregated from advantaged students, and low-performing students are to be found in different schools than high-performing ones.“
OECD (Hrsg.), Benchmarking the Performance of China’s Education System (2020), S. 22.