According to the current distribution of Montessori education in all countries around the world, Montessori environment includes:

◎ Infant environment (Nido and Infant Community) is specially set for 0-3 years old infant.

◎ Children's Houses (Casa dei Bambini-Elementary environment) is specially set for 3-6 years old school children.

◎ Children's Houses (Casa dei Bambini-Elementary environment) is specially set for 6-12 years old school children.

◎ Middle school education (Secondary environment) is set for 12-15 years old school children.

Montessori specially calls this group of children "Daughter of Earth" (eral Kinder).