The York Junior School
TYS has two campuses in midtown Toronto, which are located on Yonge Street near St. Clair Avenue. The JK–Grade 5 students learn at 1639 Yonge Street (north of St. Clair Avenue). The Junior School features a playground, an art room, a music room, classrooms, a cafeteria, a kindergarten area, an outdoor classroom, and a gymnasium.
 
In the summer of 2025, TYS began renovating the Junior School campus to create more space for STEAM learning, a larger dining hall and learning commons, a second gymnasium, two classrooms for Grade 6 (which is currently taught at the Middle and Senior School), and a Leadership and Community Lounge for Grade 6 students. The renovation, which will not disrupt classes, will be completed in August 2026.
 

The York Middle and Senior School Campus
TYS has two campuses in midtown Toronto, Grades 6–12 students have classes at 1320 Yonge Street (south of St. Clair Avenue). In addition to classrooms and labs, this campus includes a gymnasium, athletic commons, art room, the Leigh Family Centre for Wellbeing, a drama room, music room, cafeteria, turf, library, and specialized rooms for film and STEAM learning.