J. Addison School

August 2025
August 22 @ 9:00 am - 4:00 pm
2025 Summer High School Credit Course

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
Last Day of Summer School Session II
August 29 @ 11:00 am - August 31 @ 10:00 pm
Move in New Dormitory Residents

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
Dormitory move-in available for new students from 11:00 am to 10:00 pm
September 2025
September 1
Labour Day

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
School will be closed
September 1 @ 4:00 pm - September 3 @ 10:00 pm
Move in All Returning Dormitory Residents

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
All returning residents (4pm-10pm)
September 2
First Day of School Elementary Program

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
Welcome to 2025-2026 School Year.
September 3
Orientation Day Secondary Program

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
Welcome to J Addison School
September 4
First Day of School Secondary Program

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
First Day of Academic School Semester I
September 4 @ 7:00 pm - 8:00 pm
Dormitory Orientation

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
Orientation for Returning Dorm Students
September 9 @ 3:00 pm - 4:00 pm
Volleyball Tryouts

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
Girls and Boys in Grades 9-12 are invited to try out and represent J. Addison School Please wear proper clothing.
September 26
PA Day

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
Professional Activity Day. No class
October 2025
October 13
Thanksgiving

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
Statutory Holiday. No class
November 2025
November 7
PA Day

J. Addison School 2 Valleywood Drive, Markham, Ontario, Canada
Professional Activity Day. No class