Most educators and many politicians consider teacher education to be the key for schools reforms. History of teachers education shows most notably a history of permanent idealization, great expectations and only small effects. The article uses german sources of 19th century to reconstruct some parts of this history and especially the emergence of an ideal language to phrase and embed expecations that are still vivid today. Students want to be ideal teachers, society expects perfect ootcomes and teacher education cannot help but forster these expectation as long as it follows the paths of its own history.