Closing the school-entry age gap in Luxembourg through early childhood education

Most OECD countries use a fixed date of birth to determine when children start school. In Luxembourg, for example, a child born on 31 August starts school a full year earlier than a child born on 1 September. This difference in timing has substantial consequences for children’s learning, progression and long-term opportunities. Almost 1 in 4 children born in August repeat a year by the age of 8, compared with around 1 in 8 children born in September, with a larger impact on disadvantaged and migrant families.
The penalty associated with school entry age is highly relevant for policymakers because grade repetition is unfair, costly, and shapes later educational pathways. New evidence from the CSA reform (Chèque-Service Accueil) shows that expanding access to Early Childhood Education and Care (ECEC) can significantly reduce this disparity. Strengthening ECEC provision therefore offers a practical policy lever to improve fairness and the overall efficiency of the education system.