„Student fees can act as a signal of the quality of education, in particular in those countries with a positive reputation. In such cases, higher fees tend to attract international students. A reverse causality effect also exists, whereby those countries and universities that already attract high numbers of international students, predominantly English-speaking OECD countries, can afford to charge high fees based on their popularity. Charging tuition fees allows universities to maintain a constant funding stream, which, in turn, allows them to improve their educational rankings, increase in prestige and research output, and subsidise the cost of enrolling additional domestic students.“
OECD (Hrsg.), International Migration Outlook 2022 (2022), S. 137.