Adolf Hitler took power on 30 January 1933. On 7 April of that year the Law for the Restoration of the Professional Civil Service was enacted; this law, and its subsequent related ordinances, politicized the education system in Germany. Other factors enforcing the politicization of education were "Nationalsozialistische Deutsche Arbeiterpartei" (NSDAP, National Socialist German Workers Party) organizations in academia and the rise of the "Deutsche Physik" movement, which was anti-Semitic and had a bias against theoretical physics, especially including quantum mechanics. The Party organizations were the "Nationalsozialistischer Deutscher Studentenbund" (NSDStB, National Socialist German Student League) founded in 1926, the "Nationalsozialistischer Lehrerbund" (NSLB, National Socialist Teachers League) founded in 1927, and the "Nationalsozialistischer Deutscher Dozentenbund" (NSDDB, National Socialist German University Lecturers League) founded in 1933. While membership in the NSDDB was not mandatory, it was tactically advantageous, if not unavoidable, as the district leaders had a decisive role in the acceptance of an "Habilitationsschrift", which was a prerequisite to attaining the rank of "Privatdozent" necessary to becoming a university lecturer.