St Luke's Grammar School
Updated Oct 2026 · ACARA 2025Dee Why, New South Wales 2099 · Northern Beaches LGA
About St Luke's Grammar School
St Luke's Grammar School is an independent combined (K–12) school located in Dee Why, New South Wales (2099), within the Northern Beaches local government area. It caters for students from K to 12 and in 2025 enrolled 1,481 students (719 girls and 762 boys). The school is affiliated with Independent Schools NSW.
St Luke's Grammar School has an ICSEA value of 1178, indicating exceptionally high socio-educational advantage, among the most advantaged school communities in Australia. That places it in the 98th percentile of Australian schools. 71% of students come from the top socio-educational quarter and 1% from the bottom quarter.
The school employs 137 teachers (122.1 full-time equivalent) and 58 non-teaching staff, giving a student-to-teacher ratio of about 12.1 to 1. Enrolments have grown by 24% over the past five years.
On the Success Index, St Luke's Grammar School scores 84.6 out of 100, placing it in the top 5% of combined schools nationally and 14th of 314 combined schools in NSW (1st of 8 in the Northern Beaches area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1178
- Students in the top advantage quarter (15%)71% of students
- Teacher resourcing (students per teacher) (15%)12.1 students per teacher
- Enrolment growth vs local area (5 years) (10%)+24% enrolments since 2020 (area median +11%)
- ICSEA trend (5 years) (10%)+21 ICSEA points since 2020
The Success Index summarises the academic environment of a school community using official ACARA data. It is not a measure of teaching quality or student results. Read the methodology.
Student profile
Distribution of students across socio-educational advantage (SEA) quarters, plus community characteristics.
Enrolments by year level
How St Luke's Grammar School's 1,481 students are spread across year levels in 2025.
Enrolment trend
How enrolments at St Luke's Grammar School have changed over the past decade.
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Schools near St Luke's Grammar School
Closest schools by straight-line distance, with their Success Index.
Northern Beaches Secondary College Manly Campus
North Curl Curl · Government high school · 7-12
766 students · ICSEA 1217 · 371 m away
Curl Curl North Public School
North Curl Curl · Government primary · K-6
699 students · ICSEA 1116 · 733 m away
St Kevin's Catholic Primary School
Dee Why · Catholic primary · K-6
178 students · ICSEA 1085 · 843 m away
Northern Beaches Secondary College Freshwater Senior Campus
Freshwater · Government high school · 11-12
647 students · ICSEA 1098 · 1.0 km away
St Augustine's College Sydney
Brookvale · Independent combined · 5-12
1,580 students · ICSEA 1141 · 1.1 km away
Dee Why Public School
Dee Why · Government primary · K-6
478 students · ICSEA 1028 · 1.2 km away
Brookvale Public School
Brookvale · Government primary · K-6
306 students · ICSEA 1075 · 1.2 km away
St John the Apostle Catholic Primary School
Narraweena · Catholic primary · K-6
247 students · ICSEA 1091 · 1.4 km away
Harbord Public School
Freshwater · Government primary · K-6
881 students · ICSEA 1137 · 1.4 km away
Narraweena Public School
Narraweena · Government primary · K-6
511 students · ICSEA 1059 · 1.5 km away
Similar schools
Independent combined schools in NSW with a comparable ICSEA.
Pymble Ladies' College
Pymble · Independent combined · K-12
2,501 students · ICSEA 1178
MLC School
Burwood · Independent combined · K-12
1,393 students · ICSEA 1177
Meriden School
Strathfield · Independent combined · K-12
1,761 students · ICSEA 1180
Tara Anglican School for Girls
North Parramatta · Independent combined · K-12
979 students · ICSEA 1175
Newcastle Grammar School
The Hill · Independent combined · K-12
1,049 students · ICSEA 1181
Cranbrook School
Bellevue Hill · Independent combined · K-12
1,693 students · ICSEA 1181
Frequently asked questions
Is St Luke's Grammar School a public or private school?
St Luke's Grammar School is a Independent school, which makes it a non-government (private) school affiliated with Independent Schools NSW.
What year levels does St Luke's Grammar School offer?
St Luke's Grammar School offers K to 12. It is classified by ACARA as a combined school.
How many students attend St Luke's Grammar School?
In 2025, St Luke's Grammar School had 1,481 enrolled students (719 girls, 762 boys), a change of 24% over five years.
What is the ICSEA of St Luke's Grammar School?
St Luke's Grammar School has an ICSEA (Index of Community Socio-Educational Advantage) of 1178. The national average is 1000, so this indicates exceptionally high socio-educational advantage, among the most advantaged school communities in Australia. ICSEA reflects the school community, not teaching quality.
How does St Luke's Grammar School rank in NSW?
St Luke's Grammar School ranks 14th of 314 combined schools in New South Wales on the Success Index (84.6/100), and 46th of 1,259 nationally.
What is the student-to-teacher ratio at St Luke's Grammar School?
St Luke's Grammar School has about 12.1 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at St Luke's Grammar School?
In 2025, St Luke's Grammar School had 168 students in Year 7 and 128 in Year 12.
Is St Luke's Grammar School co-ed?
Yes. St Luke's Grammar School is a co-educational school enrolling both girls and boys.
What other schools are near St Luke's Grammar School?
There are 10 other schools within 15 km of St Luke's Grammar School in our database. Scroll up to the "Nearby schools" section to compare them by Success Index, ICSEA and enrolments, or use the Compare tool.
Where can I get tutoring near St Luke's Grammar School?
The closest Success Tutoring centre is Success Tutoring Dee Why, about 870 m from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.