The author analyzes the scientific and social activity of rev. Stefan Wyszyński in 1925-1929 while studying in Lublin. After the annual pastoral ministry in Włocławek, S. Wyszyński was sent to study in the University of Lublin (from 1928 – the Catholic University of Lublin). In 1929 he graduated canon law on the basis of doctoral dissertation entitled “The rights of the Church to the school”. At the same time he attended classes from the Social and Economic Section. Rev. Wyszyński also was a member of numerous associations and student organizations.