USOS is a social justice driven non-profit association that exists as a cooperation between the University of Antwerp and the Flemish/Dutch Jesuits. It facilitates and strengthens collaborations between UAntwerpen and institutions in DR Congo, India, Morocco and Nicaragua. The partnerships are based on the exchange of knowledge and practices and on the reciprocal exchange of students and staff. USOS is mandated by University of Antwerp to engage in global citizenship for which it offers various trainings of experiential learning, such as immersion programmes, on-campus debates and pen friend correspondences.