The moment of starting school is a special moment in the life of every child. But when is a child ready for school? Hermann Koepke's well-established studies on the seventh, ninth, and twelfth years of life highlight the specific challenges and opportunities of these age stages. These years can be referred to as threshold years in child development, during which the child incarnates into their body through their head, chest, and limbs. Practical descriptions show what is important for the child to be engaged in such a way through teaching that they can find their way to themselves.