Founded in 1982, Montessori International School is an educational institution for the children aged 16 months through 15 years. Located in Mesa, Ariz., the school offers a variety of academic programs in the categories of toddler community, primary, lower elementary, middle elementary and upper elementary classes. Its toddler, primary and lower elementary classes are affiliated with the Association Montessori International (AMI). The educational institution offers its courses in geography, biology, history, language, mathematics, science, music and art.