Lord Dorchester Secondary School
🇨🇦 Official data · 2025Dorchester, Ontario N0L1G2 · Thames Valley DSB
#328 of 766 secondary schools in Ontario
#328 of 766 nationally
About Lord Dorchester Secondary School
Lord Dorchester Secondary School is a public secondary located in Dorchester, in the Thames Valley DSB school board or district of Ontario, Canada. It caters for Grades 9-12. In 2025 it enrolled 605 students. Publicly funded schools run by public school boards or districts; free to attend.
Its Success Index (Canada) is 54.6 out of 100, placing it in the top 50% of secondary schools in Canada and 328th of 766 ranked secondary schools in Ontario. Its strongest component is community advantage (fewer low-income households) (92th percentile), and its weakest is osslt first-attempt pass rate (16th percentile).
Other published figures: enrolment 605; first language not english 6%; special education 20%; identified as gifted 2%.
There are 4 schools in Dorchester; Lord Dorchester Secondary School ranks 1st of 4 scored schools there.
Success Index (Canada) breakdown
Each component is a percentile against secondary schools across Canada.
- EQAO Grade 3 (reading, writing, maths) (20%)–
- EQAO Grade 6 (reading, writing, maths) (25%)–
- EQAO Grade 9 mathematics (25%)63%
- OSSLT first-attempt pass rate (20%)74%
- FSA literacy score (25%)–
- FSA numeracy score (25%)–
- Community advantage (fewer low-income households) (10%)4%
- Parent education (fewer parents without a credential) (10%)3%
The Success Index (Canada) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Lord Dorchester Secondary School by the official sources.
- Enrolment
- 605
- Students enrolled in the latest published year.
- EQAO Grade 9 maths
- 63%
- % at or above the provincial standard in Grade 9 mathematics.
- OSSLT pass rate
- 74%
- % passing the Grade 10 literacy test on the first attempt.
- Low-income households
- 4%
- % of students living in low-income households.
- Parents without a credential
- 3%
- % of students whose parents have no degree, diploma or certificate.
- First language not English
- 6%
- % of students whose first language is not English.
- Special education
- 20%
- % of students receiving special education services.
- Identified as gifted
- 2%
- % of students identified as gifted.
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Schools near Lord Dorchester Secondary School
Closest schools by straight-line distance, with their Success Index (Canada).
St David Separate School
Dorchester · Catholic elementary · Grades JK-8
270 students · 761 m away
River Heights School
Dorchester · Public elementary · Grades JK-3
385 students · 860 m away
Northdale Central Public School
Dorchester · Public elementary · Grades 4-8
410 students · 1.0 km away
Holy Family Elementary School
London · Catholic elementary · Grades JK-8
255 students · 7.7 km away
Bonaventure Meadows Public School
London · Public elementary · Grades JK-8
380 students · 7.9 km away
John P Robarts Public School
London · Public elementary · Grades JK-8
625 students · 8.0 km away
Lord Nelson Public School
London · Public elementary · Grades JK-8
485 students · 8.7 km away
Clarke Road Secondary School
London · Public secondary · Grades 9-12
1,115 students · 9.1 km away
Jackson Meadows Public School
London · Public elementary · Grades JK-8
· 9.1 km away
Tweedsmuir Public School
London · Public elementary · Grades JK-8
460 students · 9.6 km away
Similar schools
Public secondary schools in Ontario with a comparable Enrolment.
North Grenville District High School
Kemptville · Public secondary · Grades 9-12
605 students
Jarvis Collegiate Institute
Toronto · Public secondary · Grades 9-12
610 students
Thistletown Collegiate Institute
Toronto · Public secondary · Grades 9-12
610 students
Lindsay Collegiate and Vocational Institute
Lindsay · Public secondary · Grades 9-12
600 students
Bayridge Secondary School
Kingston · Public secondary · Grades 9-12
595 students
Woodstock Collegiate Institute
Woodstock · Public secondary · Grades 9-12
590 students
Frequently asked questions
Is Lord Dorchester Secondary School a good school?
Lord Dorchester Secondary School has a Success Index (Canada) of 54.6 out of 100 (Top 50% of secondary schools in Canada) and ranks #328 of 766 in Ontario. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Lord Dorchester Secondary School rank in Ontario?
Lord Dorchester Secondary School ranks #328 of 766 secondary schools in Ontario and #328 of 766 nationally on the Success Index (Canada) (2025 data).
How many students attend Lord Dorchester Secondary School?
Lord Dorchester Secondary School had 605 students in 2025.
Is Lord Dorchester Secondary School a elementary school or a secondary school?
Lord Dorchester Secondary School is classified as a secondary covering Grades 9-12. It is a public school.
What other schools are near Lord Dorchester Secondary School?
There are 10 schools within 15 km of Lord Dorchester Secondary School; they are listed on this page with their Success Index (Canada) and distance, and can be compared side by side.