„Fifteen year-old students whose parents have only attained a primary level of education perform worse on PISA assessments in reading (OECD average of 417), as compared to their classmates whose parents have a secondary (463) or tertiary (489) education.“
OECD (Hrsg.) How’s Life? 2020 (2020), S. 125.
Österreichs Werte: 418, 481 und 497. (Quelle: ibidem, Figure 6.11.)