Hillside Montessori School is the best authentic Montessori preschool in Orange County. We are so much more than an average Preschool / Kindergarten. Our program is first and foremost about providing the warm and caring environment that every child needs as a foundation for learning. Whether this is your child’s first experience with preschool or if you are looking for a better alternative to traditional Day Care / Child Care, Hillside Montessori is sure to make you and your child feel at home.