This paper discusses the Yiddish-language foundational act of the Max Nordau shule in La Plata, Argentina. It also discusses the historical and political context of the school’s foundation and the founders’ educational attitudes toward progressive education and Yiddish as the language of instruction and daily use. The paper reveals insights gained from a study of the Yiddish language foundational act document, such as the importance of Jewish elementary education for the survival of Jewish culture and the transmission to children of a strong Jewish identity.