J Clarke Richardson Collegiate Institute

Public · Secondary

1355 HARWOOD AVE, AJAX, ON, L1T4G8

+1 (905) 619-9571

Durham District School Board

Official website

Grades 9-122,010 studentsopen

School information

Grades served: 9-12
Enrollment: 2,010
School organization: Durham District School Board

Academic Performance

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

secondary

5.8 / 10

Grade 9 Mathematics: 63%
Grade 10 OSSLT, first attempt: 83%

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

2,010 students in 2024-2025 — up 24% since 2011-2012. Roll as reported by Ontario, not a projection.

11–121,621
12–131,636
13–141,645
14–151,648
15–161,746
16–171,766
17–181,758
18–191,820
19–201,750
20–211,470
21–221,595
22–231,790
23–241,960
24–252,010

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.