Bereits vor Beginn der Schule deutliche Leistungsunterschiede von Kindern, die mit ihrem sozioökonomischen Status (SES) zusammenhängen …

„An extensive body of single country studies, particularly for the United States, has established that SES disparities in achievement already exist at the start of primary education and even earlier.“

Jascha Dräger u.a., Cross-national Differences in Socioeconomic Achievement Inequality in Early Primary School (2024), S. 2.