„Speaking a language at home that is different from the host-country language has a significant impact on the sense of belonging reported by students with an immigrant background. […] Speaking a language at home that is different from the language of instruction is also associated with the emotional well-being of students, as measured by their satisfaction with life and self-reported levels of anxiety.“
OECD (Hrsg.), „The Resilience of Students with an Immigrant Background“ (2018), S. 133-135