Nurturing tomorrow’s thinkers.

Since 2002, J. Addison School has been more than just a private school in Toronto – it’s been a close-knit, values-driven learning community for students from kindergarten to Grade 12. Located in Markham, our day and boarding school offers a nurturing and structured environment where students grow with confidence, discipline, and purpose. Our community is full of families who value teamwork, strong habits, and civic responsibility. Together, we empower young minds to thrive and positively impact society.

Whether you’re seeking a local K-12 day school or an on-campus boarding option for Grades 7 to 12, J. Addison provides a well-rounded academic experience enriched by extracurriculars, leadership programs, volunteering activities, and elite athletics. Our secure, fully owned campus ensures 24/7 supervision.

Our Focus For Success™ program offers students the opportunity to explore interests beyond the classroom, from science and language clubs to competitive sports. Small class sizes and individualized learning plans allow students to excel at their own pace – some even taking courses above grade level. With growing partnerships with top Canadian universities, such as York University, Wilfrid Laurier University, and Toronto Metropolitan University, our students are well-prepared for life beyond graduation.

As part of our mission to make private education more accessible, we’re proud to offer several scholarship programs, including our Tomorrow’s Thinkers Scholarship, which provides up to full tuition for local elementary students.

Visit jaddisonschool.com to learn more and discover how we’re nurturing tomorrow’s thinkers – today.