At each level, Montessori programs are designed to address the developmental characteristics normal to children in that stage. A group of children of mixed ages working and playing together in the same room allows everybody to learn at their own pace. First year students enter the classroom as a novice and benefit from observing the experienced students. The older children help the younger ones and sharing what they have learned reinforces their knowledge and skill at the same time. This mentoring builds leaders in our classrooms and gives students skills to become leaders in the community. A healthy community consists of a mix of ages and abilities. They learn how to get along together, to respect each other’s rights, and to share the environment and its resources.  The Montessori environment emphasizes cooperation, not competition.