Public School

Thornlea Secondary School

Thornhill, ON · York Region DSB · Grades 9-12

Data from official ON records · Last updated July 11, 2026

9-12 Grades
Public Type
1,170 Enrollment
Thornhill City
York Region DSB Board
905-889-9696 Phone
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Contact & School Information

Address
8075 Bayview Ave, L3T4N4
Grades
9-12
Enrollment
1,170 students
Phone
905-889-9696
Website
http://thornlea.ss.yrdsb.ca/
School Board
York Region DSB

Location

Neighbourhood Income

Statistics Canada 2021 Census · FSA level
Average After Tax Income
$49,960
Average Total Income
$63,400
Median After Tax Income
$36,000
Median Total Income
$39,600

Based on the forward sortation area (first three characters of the postal code) for this school's address.

Academic Results

EQAO data

This page includes the EQAO results for Thornlea Secondary School from 2024-2025 covering Mathematics in Grade 9. See the source data at EQAO. Expand a year and subject below to see the detailed scores.

Detailed results

2024-2025 · Grade 9 Math · Mathematics · Grade 9
% meeting or exceeding the standard
78.0%

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