There is no clear date of foundation, but teaching existed at Oxford in some form in 1096 and developed rapidly from 1167. A unique and historic institution, Oxford University is the oldest university in the English-speaking world. The first international student, Emo of Friesland, had arrived at University of Oxford around 1190. Academic halls for women were established in 1878, and they were admitted as full members of the University from 1920. Moreover, Oxford University has made significant contributions to COVID-19 vaccine development and treatment identification.