„In almost all countries with available data, upper secondary completion rates among first-generation immigrants (those born outside the country and whose parents were also born in another country, excluding international students) and second‑generation immigrants (those born in the country, but whose parents were both born in another country) are lower than those of students without an immigrant background.“
OECD (Hrsg.), Equity in education and the labour market (2024), S. 18.