The levels usually found in a Montessori school correspond to the developmental stages of childhood. The age ranges listed below are approximations based on developmental readiness.
(birth through approx. eighteen months)
(approx. eighteen months to three years)
Early Childhood (Primary)
(approx. three to six years)
(age six to nine)
(age nine to twelve)
(7th & 8th Grades)
(9th thru 12th Grades)
At each level, the program and curriculum are logical and highly consistent extentions of what has come before.