In his autobiography, George Mosse described himself as a mischievous child given to pranks. He was educated at the noted Mommsen-Gymnasium in Berlin and from 1928 onwards at Schule Schloss Salem, a famously spartan boarding school that exposed the scions of rich and powerful families to a life devoid of privilege. The headmaster at Salem, Kurt Hahn, was an advocate of experiential education and required all pupils to engage in physically challenging outdoor activities. Although Mosse disliked the school's nationalistic ethos, he conceded that its emphasis on character building and leadership gave him "some backbone." He preferred individual sports, such as skiing, to team activities.