J. Addison School

Secondary School

June 2026
Exam Review Day Secondary School
June 17

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
All students must attend
Move Out All Residents
June 18 @ 8:00 am - 11:00 am

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
All Elementary and High School Residents must leave Dormitory before 11 AM
PA Day
June 19

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
Professional Activity Day. No class
Facility Care Days
June 29 - June 30
School will be closed for scheduled facility maintenance. Regular activities will resume on July 2nd.
July 2026
Canada Day
July 1

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
School will be closed
2026 Summer School Session I First Day
July 6 @ 9:30 am - 4:00 pm

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
First Day of Summer School Session I
2026 Summer School Session I Last Day
July 30 @ 9:30 am - 4:00 pm

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
Last Day of Summer School Session I
August 2026
Civic Holiday
August 3

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
School will be closed
2026 Summer School Session II First Day
August 4 @ 9:30 am - 4:00 pm

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
First Day of Summer School Session II
2026 Summer School Session II Last Day
August 28 @ 9:30 am - 4:00 pm

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
Last Day of Summer School Session II
September 2026
Move in New Dormitory Residents
September 5 @ 11:00 am - September 7 @ 10:00 pm

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
Dormitory move-in available for new students from 11:00 am to 10:00 pm New Dormitory Residents Last Name starting with A, B, C, D, E, F, G, H, I, J 11am-10pm […]
Labour Day
September 7

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
School will be closed