English summary: Gotthold Ephraim Lessing has been a special part of German cultural memory since the beginning of the 19th century. This was only possible because it was ensured that his literary estate was preserved and cared for. In Lessing's case, it was schools especially which played a salient role in the enthronement of the poet in the German canon and thus in Germany's cultural memory. The role of the classical grammar school in this...