Sinclair Secondary School

Public · Secondary

380 Taunton Rd E, Whitby, ON, L1R2K5

+1 (905) 666-5400

Durham District School Board

Official website

Grades 9-121,655 studentsopen

School information

Grades served: 9-12
Enrollment: 1,655
School organization: Durham District School Board

Academic Performance

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

secondary

7.6 / 10

Grade 9 Mathematics: 66%
Grade 10 OSSLT, first attempt: 90%

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

1,655 students in 2024-2025 — down 18% since 2011-2012. Roll as reported by Ontario, not a projection.

11–122,018
12–131,989
13–141,932
14–151,834
15–161,689
16–171,533
17–181,379
18–191,255
19–201,175
20–211,000
21–221,080
22–231,370
23–241,525
24–251,655

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.