Reminder our clocks go backwards on Sunday November 2 for Daylight savings! For COVID-19 School Updates please click here! We are offering both in person and hybrid/online learning options. Please contact your admissions officer for more details.


We are a K-12 private day and boarding school located in Markham, Ontario, Canada. With our unwavering dedication, care and support, we nurture our tomorrow’s thinkers to becoming responsible and compassionate global citizens.

300 students

1:15 teacher to student ratio

3 residence

University Virtual Info Sessions

J. Addison school will be inviting different Universities to host a virtual information session for our students in the upcoming weeks. This will help students decide where to pursue their post-secondary education.