„According to PISA data, on average, nearly half (44%) of 15-year-olds across OECD countries usually keep notifications active on their digital devices during class. Children from low socio-economic backgrounds are more likely to keep their notifications active, possibly because they attend schools without specific policies regarding mobile phone use.“
OECD (Hrsg.), How’s Life for Children in the Digital Age? (2025), S. 139.