Bishop Tonnos Catholic Secondary School

Public · Secondary

100 Panabaker Dr, Ancaster, ON, L9G5E3

+1 (905) 523-2331

Hamilton-Wentworth Catholic District School Board

Official website

Grades 9-121,320 studentsopen

School information

Grades served: 9-12
Enrollment: 1,320
School organization: Hamilton-Wentworth Catholic District School Board

Academic Performance

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

secondary

7.9 / 10

Grade 9 Mathematics: 69%
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

1,320 students in 2024-2025 — down 1% since 2011-2012. Roll as reported by Ontario, not a projection.

11–121,330
12–131,320
13–141,284
14–151,230
15–161,157
16–171,156
17–181,137
18–191,185
19–201,220
20–211,250
21–221,260
22–231,255
23–241,290
24–251,320

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.