C W Jefferys Collegiate Institute

Public · Secondary

340 Sentinel Rd, North York, ON, M3J1T9

+1 (416) 395-3170

Toronto District School Board

Official website

Grades 9-12815 studentsopen

School information

Grades served: 9-12
Enrollment: 815
School organization: Toronto District School Board

Academic Performance

Scores compare similar schools only within Ontario, never across Canada.

secondary

1.5 / 10

Grade 9 Mathematics: 24%
Grade 10 OSSLT, first attempt: 65%

How Ontario assesses schools

EQAO, run by Education Quality and Accountability Office.

Ontario publishes provincial assessment results for individual schools.

Grades tested: 3, 6, 9, 10
Subjects: Reading, Writing, Mathematics, Literacy
Most recent year: 2024-2025

Results for this school

Secondary

Results published

A school without a score is not a school with a low score. Scores are only ever compared within Ontario and within the same stage — never between provinces, which use different tests.

Education Quality and Accountability Office

Enrolment over time

815 students in 2024-2025 — up 3% since 2011-2012. Roll as reported by Ontario, not a projection.

11–12793
12–13726
13–14698
14–15688
15–16705
16–17734
17–18731
18–19790
19–20820
20–21615
21–22835
22–23795
23–24820
24–25815

Some years are published as rounded or banded counts.

Programmes

Programmes Ontario lists for this school in 2025-2026. Only programmes the province publishes a register for can appear here, so this is not a full list of everything the school offers — and an absent programme does not mean it is not taught.