„The transition to primary school is considered a critical life event as it can be an opportunity and a risk at the same time. This early phase is important, as students who experience social, behavioral, or academic difficulties at the beginning are more likely to continue to experience problems as their school careers progress.“
Melike Ömeroğulları u. a., Relationships Between School Enjoyment, Social Integration, and Achievement at the Beginning of Primary School: Does Family Background Matter?. In: European Journal of Psychology and Educational Research, 2022, Volume 5, Issue 2, S. 128.