„Most school systems aim to improve the effectiveness of teaching by sorting students into relatively homogeneous groups according to their level of achievement.“
OECD (Hrsg.), „Equations and Inequalities“ (2016), S. 90
„Most school systems aim to improve the effectiveness of teaching by sorting students into relatively homogeneous groups according to their level of achievement.“
OECD (Hrsg.), „Equations and Inequalities“ (2016), S. 90