„Across OECD countries, after accounting for per capita GDP, the higher the percentage of students in schools that use student assessments to inform parents about their child’s progress, the weaker the relationship between students’ socio-economic status and their reading performance. After accounting for per capita GDP, these correlations are statistically significant in reading, mathematics and science both across OECD countries, and across all countries and economies.“
OECD (Hrsg.), PISA 2018 Results. Effective Policies, Successful Schools (2020), S. 180.