Children from socio-economically disadvantaged families are less likely than their more advantaged peers to participate in ECEC …

„In general, children from socio-economically disadvantaged families are less likely than their more advantaged peers to participate in ECEC. […] The PISA 2018 data show that, on average across OECD countries, 86 % of students from socio-economically advantaged backgrounds attended ECEC for at least two years, whereas this was the case for 74 % of their less advantaged peers.“
OECD (Hrsg.), Starting Strong VI (2021), S. 31.