Marienau as a school has a tradition of about 90 years. This has given it a network of particular relevance for the current school and boarding school operation. The alumni (Altschüler), the Altmarienauer Verein (AMV) and the Stiftung Marienau foundation, which closely
cooperate with the Marienau school, are essential parts of this network. As a member of the UNESCO project schools, Marienau seeks exchange with other institutions and regularly contributes to national UNESCO project days.