„The benefits of strong early learning are clearly evident at school entry, at the end of compulsory schooling and later in adulthood. Children who do not develop critical early skills such as emergent literacy or self-regulation, however, face enormous challenges in achieving well at school and in having positive outcomes during adulthood. […] Children’s test scores at the age of five better predict adult outcomes than those in primary school. Strong early learning appears to act as a foundation that, once consolidated during early schooling, then provides a protective and fertile base for greater skill development during the remaining school years and into adolescence and adulthood.“
OECD (Hrsg.), Early Learning and Child Well‑being (2020), S. 19.