 He joined the Independent Social Democratic Party of Germany ("Unabhängigen Sozialdemokratischen Partei Deutschlands" - USPD) and became active especially in forming the positions on education and educational politics of the party.In June 1920 he was elected as a member of the National Parliament until 1923 as a member of the USPD and from 1923 to 1933 as a Member of the SPD.In September 1920 he was elected an Educational Counselor of Berlin by Election Committee of the City Council.