This thesis deals with the Chajesrealgymnasium, a Viennese secondary school existing from 1919 to 1938.From the outset the Chajesgymnasium was an educational project with a highly political focus, emerging from the Zionist upswing after First World War. Hirsch Perez Chajes, the 1918-appointed Chief Rabbi of Vienna and an ardent worshipper of Herzl?s ideology, was not only chiefly responsible for ist foundation but also secured ist funding. The majority of the school?s students came from refugee and immigrant families from Eastern Europe who had found themsleves stranded in Vienna in the wake of First World War. Excluded from the other educational institutions on secondary school level for social and financial reasons, for many Jews from the former Austrian crown land Galicia the Jewish Realgymnasium offered the only chance at social advancement.The implementation of Zionist educational concepts in an Austrian secondary school was, however, severely limited by law and bureaucracy. The most important element of a Jewish nationalistic education ? the teaching of modern Hebrew ? was regularly subject to scrutiny by the school authorities. One reason for this was the ideological differences between the dominant political camps: the Social Democrats governing Vienna and the Christian Socials prevailing on a national level. Due to the organizational skills and dedication of the school?s principal Viktor Kellner, acceptable compromises could be reached on this issue. The Chajesgymnasium succeeded in winning students for the Zionist movement in a dimension which can also be verified in terms of numbers. However, as the events of 1938 put a sudden end to this institution, a conclusive answer to this question is not possible.