Montessori places children in three-year age groups (6 weeks – 12 months, 12 months – 3 years, 3 – 6 years, etc.) allowing younger students to learn from older students, and older students to serve as mentors and reinforce their learning by teaching concepts they have already mastered. Multiage groupings are a hallmark of the Montessori teaching method and provide a family-like grouping where children can find peers who are working at their current level. The age range also allows especially gifted children the stimulation of intellectual peers, without requiring that they skip a grade or feel emotionally out of place. Because teachers normally work with each child for three years, they get to know their students’ strengths and weaknesses, interests, and personalities extremely well. The children learn compassion, collaboration and a strong sense of community by working outside their peer group. This arrangement mirrors the real world, where individuals work and socialize with people of all ages and dispositions.