 In Münster, Kroll strove to enhance the quality of studying for his students.His efforts to cooperate with his colleagues led to the foundation of the "Institut für Altertumskunde" (institute for antiquity studies) which included the departments of classics, ancient history and linguistics (archaeology followed in 1914).Nevertheless, Kroll persistently tried to secure a better position for himself and in 1913 succeeded to obtain a full professorship at his alma mater in Breslau.