„The cognitive and socio-emotional skills acquired in the first five years of a child’s life have crucial and long-lasting impacts on later outcomes. […] Children who have not developed core foundation skills by the age of 7 typically struggle to make good progress at school, and are more likely to have social and behavioural difficulties throughout adolescence and adulthood.“
OECD (Hrsg.), OECD Skills Outlook 2021 (2021), S. 77.