Guelph Montessori School: Experience a Nurturing Environment for Holistic Learning. Get your kids the best education they deserve with our Montessori-based programs for Toddlers, Pre-schoolers, JK, SK, and Grades 1-6. Our mission is to provide a well-rounded and balanced Montessori education in a supportive and encouraging environment, helping students reach their full academic potential. Join us today and see the difference in your child's education. We offer programs for children ages 18 months to 12 years, open Monday to Friday from 8:00 am to 5:30 pm. Contact us for enrollment details.