„We found that social inequality in language achievement was well established even before children had entered formal schooling. Those early gaps were larger in the United Kingdom and Germany compared with the Netherlands. Moreover, these social gaps remained stable over primary schooling in the United Kingdom and Germany but enlarged in the Netherlands.“
Dr. Giampiero Passaretta u. a., Is Social Inequality in School-Age Achievement Generated before or during Schooling? A European Perspective. In: European Sociological Review, 2022, 38, S. 862.