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This paper presents comparative information on the socioeconomic status (SES) gradients in literacy skills at age 6-8, drawing on harmonized national datasets from France, Germany, Japan, the Netherlands, the United Kingdom, and the United States. We investigate whether understanding of comparative SES gradients in early-to-mid childhood depends on the operationalization of SES (parental education, income, or both); and whether differences in inequalities at the end of lower secondary schooling documented in international large-scale assessments are already present when children have experienced at most two years of formal compulsory schooling. We find marked differences in the SES gradient in early achievement across countries that are largely insensitive to the way SES is measured, and that seem to mirror inequalities reported for older students. We conclude that country context shapes the link between parental SES and children’s educational achievement, with country differences rooted in the early childhood period.

Socioeconomic inequalities in childhood Body Mass Index (BMI) are becoming increasingly more pronounced across the world. Although countries differ in the direction and strength of these inequalities, cross-national comparative research on this topic is rare. This paper draws on harmonized longitudinal cohort data from four wealthy countries-Germany, the Netherlands, the United Kingdom (UK), and the United States (US)-to 1) map cross-country differences in the magnitude of socioeconomic inequalities in childhood BMI, and 2) to examine cross-country differences in the role of three energy-balance-related behaviors-physical activity, screen time, and breakfast consumption-in explaining these inequalities. Children were aged 5-7 at our first timepoint and were followed up at age 8-11. We used data from the German National Educational Panel Study, the Dutch Generation R study, the UK Millennium Cohort Study and the US Early Childhood Longitudinal-Kindergarten Study. All countries revealed significant inequalities in childhood BMI. The US stood out in having the largest inequalities. Overall, inequalities between children with low versus medium educated parents were smaller than those between children with high versus medium educated parents. The role of energy-balance-related behaviors in explaining inequalities in BMI was surprisingly consistent. Across countries, physical activity did not, while screen time and breakfast consumption did play a role. The only exception was that breakfast consumption did not play a role in the US. Cross-country differences emerged in the relative contribution of each behavior in explaining inequalities in BMI: Breakfast consumption was most important in the UK, screen time explained most in Germany and the US, and breakfast consumption and screen time were equally important in the Netherlands. Our findings suggest that what constitutes the most effective policy intervention differs across countries and that these should target both children from medium as well as low educated families.

Child outcomes vary by family’s socioeconomic status (SES). Research on explanatory factors underlying early SES-related disparities has mainly focused on specific child outcomes (e.g., language skills) and selected influencing factors in single countries often with a focus on individual differences but not explicitly on early SES-related gaps. This study uses harmonised data from longitudinal large-scale studies conducted in the United Kingdom, United States, and Germany to examine parental education-related gaps in early child language and social skills. Twelve theoretically proposed family-, child-, and childcare-related factors were systematically evaluated as explanatory factors. In all countries, parental education-related gaps were particularly pronounced for early child language compared to social skills. In the decomposition analyses, the home learning environment was the only measure that significantly explained gaps in all child outcomes across all countries. Early centre-based care attendance, family income, and maternal age at childbirth contributed to gaps in child outcomes with the specific pattern of results varying across outcomes and countries. Maternal depressive feelings significantly contributed only to explaining gaps in children’s social skills. Thus, while some mechanisms found to underpin early parental education-related gaps can be generalized from single-country, single-domain studies, others are outcome- and context-specific.

This study takes a cross-country perspective to examine whether inaccurate teacher judgements of students’ math skills correlate with student social origin and whether such bias is associated with math achievement in primary school. We focus on England, Germany, and the US because these countries differ in the teachers’ growth mindsets, accountability, the use of standardised tests, and the extent of ability grouping. The data stem from three large-scale surveys, the Millennium Cohort Study for England, the National Educational Panel Study for Germany, and the Early Childhood Longitudinal Study, Kindergarten Class of 2010–11 for the US. At the beginning of primary education, teacher judgements were not entirely consistent with student scores in standardised tests. In England and Germany, teachers underrated students with low-educated parents and overrated those with high-educated parents. In the US, no such differences were found. In all three countries, overrated (or underrated) students performed better (worse) later on. In England and, to a lesser extent, in Germany, we found evidence that biased teacher judgements contribute—over the course of primary school—to widening inequalities in value-added achievement by parental education. Such effects were negligible in the US. Our findings suggest that a cross-country perspective is essential to better understand contextual factors’ role in systematic bias in teacher judgements and its relevance for educational achievement. This study can be seen as a starting point for future research to investigate the mechanisms of such contextual effects more thoroughly.

There is substantial variation in the degree of social stratification in students’ achievement across countries. However, most research is based on cross-sectional data. In this study, we evaluate the importance of social origin, namely parents’ education, for achievement inequalities during lower secondary school using recent longitudinal microdata for France, Germany, the United States, and England, and evaluate whether country differences can be attributed to different tracking systems or the social segregation of schools. We find substantial SES-gaps in math achievement progress in all four countries but more pronounced gaps in England and Germany. Yet, within school SES-gaps are similar across countries suggesting that the allocation of students to schools drives country differences. Moreover, we find that between-school tracking in Germany accounts for a large share of the SES-gaps, whereas course-by-course tracking seems less important in the other countries. The role of schools’ social segregation is similar across countries.