During the 19th century, various frameworks were established in Germany for the purpose of providing Jewish students with religious education. The article deals primarily with the orthodox Congregation Adass-Isroel Religious School. Established in 1869 in Berlin, the school had a major impact on the development of supplementary religious instruction throughout Germany and served as a model in this area. The school's background, history, basic principles and method of instruction, as well as study subjects (Hebrew, Bible, Talmud, Religious instruction, History) are discussed and compared to corresponding religious schools. Research is based on the school's annual reports, archival material, scholarly literature, memoirs, and newspapers.