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PISA 2015: On average, students who speak another language at home scored 54 points lower than non-immigrant students ...

PISA 2015: „On average, students who speak another language at home scored 448 points in science, which is 54 points lower than non-immigrant students who scored on average 502 points in science.“

OECD (Hrsg.), „Educational Opportunity for All“ (2017), S. 86

In Österreich beträgt der Rückstand sogar 79 Punkte (431 Punkte versus 510 Punkte).