Today, scientific knowledge is predominantly disseminated in English. We show that global universities' research performance declines as the differences of their local language from English increase. This effect is robust to controls for proportion of international staff and faculty-to-student...

Global universities are switching their language of instruction to English to strengthen international rankings and research power. This paper quantifies the benefits of switching to English on university research performance and faculty recruiting. Using the two-way fixed effects (TWFE)...