2018-19 School year begins Sept. 4! Returning high school students start on Sept. 5  |  Aug. 6 – School is closed for August Civic Holiday |  All summer programs end on Aug. 24  |  Sept. 3 – School is closed for Labour Day |

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

Career Day/Career Speaker Series

J. Addison School would like to invite you to be a guest presenter as part of our Career Day/Career Speaker Series on April 17, 2018 from 2 – 4 pm at J. Addison School. Inspire the youth of our community… more



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