they Germanized the Polish name Kaźmierczak to Kasner. Merkel's maternal grandparents were the Danzig politician Willi Jentzsch, and Gertrud Alma (née Drange), a daughter of the city clerk of Elbing (now Elbląg, Poland) Emil Drange. Since the mid-1990s, Merkel has publicly mentioned her Polish heritage on several occasions and described herself as a quarter Polish, but her Polish roots became better known as a result of a 2013 biography. Religion played a key role in the Kasner family's migration from West Germany to East Germany. Merkel's paternal grandfather was originally Catholic but the entire family converted to Lutheranism during the childhood of her father, who later studied Lutheran theology in Heidelberg and Hamburg. In 1954, when Angela was just three months old, her father received a pastorate at the church in (a quarter of Perleberg in Brandenburg), which was then in East Germany. The family moved to Templin and Merkel grew up in the countryside north of East Berlin. In 1968, Merkel joined the Free German Youth (FDJ), the official communist youth movement sponsored by the ruling Marxist–Leninist Socialist Unity Party of Germany. Membership was nominally voluntary, but those who did not join found it difficult to gain admission to higher education. She did not participate in the secular coming-of-age ceremony Jugendweihe, however, which was common in East Germany. Instead, she was confirmed. During this time, she participated in several compulsory courses on Marxism–Leninism, with her grades only being regarded as "sufficient". Merkel later said that "Life in the GDR was sometimes almost comfortable in a certain way, because there were some things one simply couldn't influence." Education and scientific career At school Merkel learned to speak Russian fluently, and was awarded prizes for her proficiency in Russian and mathematics. She was the best in her class in mathematics and Russian, and completed her school education with the best possible average Abitur grade 1.0. Merkel continued her education at Karl Marx University, Leipzig, where she studied physics from 1973 to 1978. While a student, she participated in the reconstruction of the ruin of the Moritzbastei, a project students initiated to create their own club and recreation facility on campus. Such an initiative was unprecedented in the GDR of that period, and initially resisted by the university. With backing of the local leadership of the SED party, the project was allowed to proceed. Near the end of her studies, Merkel sought