Integrating students with an immigrant background is part of the socio-economic challenge, and the performance levels of students who immigrated to the country in which they were assessed in PISA can only be partially attributed to the education system of their host country. With 19.5%, the United States has the 6th highest share of students with an immigrant background among OECD countries. However, the share of students with an immigrant background explains just 3% of the performance variation between countries.