Sir William Mulock Secondary School
🇨🇦 Official data · 2025Newmarket, Ontario L3X2M7 · York Region DSB
#221 of 766 secondary schools in Ontario
#221 of 766 nationally
About Sir William Mulock Secondary School
Sir William Mulock Secondary School is a public secondary located in Newmarket, in the York Region DSB school board or district of Ontario, Canada. It caters for Grades 9-12. In 2025 it enrolled 1,190 students. Publicly funded schools run by public school boards or districts; free to attend.
Its Success Index (Canada) is 65.2 out of 100, placing it in the top 50% of secondary schools in Canada and 221st of 766 ranked secondary schools in Ontario. Its strongest component is community advantage (fewer low-income households) (74th percentile), and its weakest is eqao grade 9 mathematics (60th percentile).
Other published figures: enrolment 1,190; first language not english 34%; special education 25%; identified as gifted 1%.
There are 40 schools in Newmarket; Sir William Mulock Secondary School ranks 10th of 28 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%)59%
- OSSLT first-attempt pass rate (20%)89%
- FSA literacy score (25%)–
- FSA numeracy score (25%)–
- Community advantage (fewer low-income households) (10%)6%
- Parent education (fewer parents without a credential) (10%)2%
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 Sir William Mulock Secondary School by the official sources.
- Enrolment
- 1,190
- Students enrolled in the latest published year.
- EQAO Grade 9 maths
- 59%
- % at or above the provincial standard in Grade 9 mathematics.
- OSSLT pass rate
- 89%
- % passing the Grade 10 literacy test on the first attempt.
- Low-income households
- 6%
- % of students living in low-income households.
- Parents without a credential
- 2%
- % of students whose parents have no degree, diploma or certificate.
- First language not English
- 34%
- % of students whose first language is not English.
- Special education
- 25%
- % of students receiving special education services.
- Identified as gifted
- 1%
- % of students identified as gifted.
Free academic assessment
Is your child on track for EQAO and beyond?
Success Tutoring offers personalised English and math tutoring from Kindergarten to Grade 12. Start with a free online assessment and a clear plan for the year ahead.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Centres across NSW, VIC, QLD, WA, SA and ACT
Schools near Sir William Mulock Secondary School
Closest schools by straight-line distance, with their Success Index (Canada).
St John Chrysostom Catholic Elementary School
Newmarket · Catholic elementary · Grades JK-8
210 students · 343 m away
Terry Fox Public School
Newmarket · Public elementary · Grades JK-8
410 students · 437 m away
Clearmeadow Public School
Newmarket · Public elementary · Grades JK-8
560 students · 846 m away
Armitage Village Public School
Newmarket · Public elementary · Grades JK-8
345 students · 920 m away
St Paul Catholic Elementary School
Newmarket · Catholic elementary · Grades JK-8
150 students · 1.2 km away
Crossland Public School
Newmarket · Public elementary · Grades JK-8
470 students · 1.6 km away
St Nicholas Catholic Elementary School
Newmarket · Catholic elementary · Grades JK-8
400 students · 1.7 km away
Rogers Public School
Newmarket · Public elementary · Grades JK-8
420 students · 1.9 km away
Stuart Scott Public School
Newmarket · Public elementary · Grades JK-8
200 students · 2.4 km away
J L R Bell Public School
Newmarket · Public elementary · Grades JK-5
135 students · 2.4 km away
Similar schools
Public secondary schools in Ontario with a comparable Enrolment.
Centre Wellington District High School
Fergus · Public secondary · Grades 9-12
1,190 students
Heart Lake Secondary School
Brampton · Public secondary · Grades 9-12
1,185 students
SATEC @ W A Porter Collegiate Institute
Scarborough · Public secondary · Grades 9-12
1,185 students
Ancaster High School
Ancaster · Public secondary · Grades 9-12
1,180 students
Bowmanville High School
Bowmanville · Public secondary · Grades 9-12
1,180 students
Strathroy District Collegiate Institute
Strathroy · Public secondary · Grades 9-12
1,200 students
Frequently asked questions
Is Sir William Mulock Secondary School a good school?
Sir William Mulock Secondary School has a Success Index (Canada) of 65.2 out of 100 (Top 50% of secondary schools in Canada) and ranks #221 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 Sir William Mulock Secondary School rank in Ontario?
Sir William Mulock Secondary School ranks #221 of 766 secondary schools in Ontario and #221 of 766 nationally on the Success Index (Canada) (2025 data).
How many students attend Sir William Mulock Secondary School?
Sir William Mulock Secondary School had 1,190 students in 2025.
Is Sir William Mulock Secondary School a elementary school or a secondary school?
Sir William Mulock Secondary School is classified as a secondary covering Grades 9-12. It is a public school.
What other schools are near Sir William Mulock Secondary School?
There are 10 schools within 15 km of Sir William Mulock Secondary School; they are listed on this page with their Success Index (Canada) and distance, and can be compared side by side.