1) ERDKINDER means land-children. The Montessori educational method is designed for children at primary and elementary schools, but some of them also attend secondary learning communities. "They are learning of the beginning of civilization that occurred when the tribes settled on the land and began a life of peace and progress while the nomads remained barbarians and warriors." (Dr Maria Montessori). Originally, it was a boarding school (12-18) in the countryside, and boys and girls lived together in a dormitory or hostel where they did all the cleaning, laundry, shopping, cooking, etc.  Nicotine, alcohol, or drugs are not used in the community, and also not promoting the eating of meat.  Gold mining is worthless without eating some tomatoes. Nature supports going swimming, hiking, or walking. They also do community service and voluntary work. And they all study MICROECONOMICS. Kindergarten is another loanword from the German language, but in English, it refers to preschool activities. Selig sind die Armen im Geiste. Students develop the knowledge, understanding, skills, and values necessary to achieve optimal, healthy, and sustainable living for every person as an individual and as a member of families and society. 

Learning Aims are not Learning Outcomes. There is nothing wrong with valuing practical or technical skills instead of learning academic theories. Even people in megacities may have big houses with beautiful gardens. Besides the teachers of academic subjects, there must also be vocational instructors for sports and dance, agriculture, horticulture, culinary arts, a business manager for the shop and the dormitory or hostel, woodwork and handicrafts, and textile teachers. Students sell their goods (flowers, vegetables, handiwork, etc) in a shop or market in the nearest town or city. For example, Huntsburg in Ohio, the outskirts of Cleveland. This type of Montessori school differs from boarding schools such as Eton or Harrow and Oxford or Cambridge. Montessori's value is being healthy in your mind and body. The Montessori method was never trademarked or patented, so state-regulated or independent schools will vary from one to another in terms of how much they adhere to the original ethos. As an expatriate and educator abroad, she received her science and arts knowledge in Rome, Italy.