Cranbrook School
Updated Oct 2026 · ACARA 2025Bellevue Hill, New South Wales 2023 · Woollahra LGA
About Cranbrook School
Cranbrook School is an independent boys' combined (K–12) school located in Bellevue Hill, New South Wales (2023), within the Woollahra local government area. It caters for students from K to 12 and in 2025 enrolled 1,693 students. The school is affiliated with Independent Schools NSW.
Cranbrook School has an ICSEA value of 1181, indicating exceptionally high socio-educational advantage, among the most advantaged school communities in Australia. That places it in the 99th percentile of Australian schools. 73% of students come from the top socio-educational quarter and 0% from the bottom quarter.
The school employs 221 teachers (187.4 full-time equivalent) and 133 non-teaching staff, giving a student-to-teacher ratio of about 9.0 to 1. Enrolments have grown by 10% over the past five years.
On the Success Index, Cranbrook School scores 85.9 out of 100, placing it in the top 5% of combined schools nationally and 11th of 314 combined schools in NSW (5th of 6 in the Woollahra area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1181
- Students in the top advantage quarter (15%)73% of students
- Teacher resourcing (students per teacher) (15%)9.0 students per teacher
- Enrolment growth vs local area (5 years) (10%)+10% enrolments since 2020 (area median +2%)
- ICSEA trend (5 years) (10%)-2 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 Cranbrook School's 1,693 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Cranbrook School have changed over the past decade.
Free academic assessment
Is your child on track at Cranbrook School?
Rankings tell you about a school community. A free Success Tutoring assessment tells you about your child: exactly where they are in English and Maths, where the gaps are, and a plan to close them. Small-group, Australian-curriculum tutoring with no lock-in contracts.
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Schools near Cranbrook School
Closest schools by straight-line distance, with their Success Index.
The Scots College
Bellevue Hill · Independent combined · K-12
2,076 students · ICSEA 1162 · 417 m away
Double Bay Public School
Double Bay · Government primary · K-6
237 students · ICSEA 1135 · 1.1 km away
Ascham School
Edgecliff · Independent combined · K-12
1,182 students · ICSEA 1217 · 1.6 km away
Rose Bay Public School
Rose Bay · Government primary · K-6
377 students · ICSEA 1145 · 1.8 km away
Bellevue Hill Public School
Bellevue Hill · Government primary · K-6
573 students · ICSEA 1156 · 1.8 km away
McAuley Catholic Primary School
Rose Bay · Catholic primary · K-6
273 students · ICSEA 1168 · 1.9 km away
Woollahra Public School
Woollahra · Government primary · K-6
667 students · ICSEA 1193 · 1.9 km away
Reddam House
Woollahra · Independent combined
· ICSEA 1203 · 2.0 km away
Kambala
Rose Bay · Independent combined · K-12
986 students · ICSEA 1169 · 2.0 km away
Holy Cross Catholic Primary School
Woollahra · Catholic primary · K-6
196 students · ICSEA 1164 · 2.0 km away
Similar schools
Independent combined schools in NSW with a comparable ICSEA.
Newcastle Grammar School
The Hill · Independent combined · K-12
1,049 students · ICSEA 1181
Newington College
Stanmore · Independent combined · K-12
2,072 students · ICSEA 1182
Meriden School
Strathfield · Independent combined · K-12
1,761 students · ICSEA 1180
Pymble Ladies' College
Pymble · Independent combined · K-12
2,501 students · ICSEA 1178
St Luke's Grammar School
Dee Why · Independent combined · K-12
1,481 students · ICSEA 1178
Ravenswood School for Girls
Gordon · Independent combined · K-12
1,451 students · ICSEA 1185
Frequently asked questions
Is Cranbrook School a public or private school?
Cranbrook School is a Independent school, which makes it a non-government (private) school affiliated with Independent Schools NSW.
What year levels does Cranbrook School offer?
Cranbrook School offers K to 12. It is classified by ACARA as a combined school.
How many students attend Cranbrook School?
In 2025, Cranbrook School had 1,693 enrolled students (0 girls, 1,693 boys), a change of 10% over five years.
What is the ICSEA of Cranbrook School?
Cranbrook School has an ICSEA (Index of Community Socio-Educational Advantage) of 1181. 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 Cranbrook School rank in NSW?
Cranbrook School ranks 11th of 314 combined schools in New South Wales on the Success Index (85.9/100), and 32nd of 1,259 nationally.
What is the student-to-teacher ratio at Cranbrook School?
Cranbrook School has about 9.0 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Cranbrook School?
In 2025, Cranbrook School had 209 students in Year 7 and 210 in Year 12.
Is Cranbrook School co-ed?
No. Cranbrook School is a boys' school.
What other schools are near Cranbrook School?
There are 10 other schools within 15 km of Cranbrook 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 Cranbrook School?
The closest Success Tutoring centre is Success Tutoring Lane Cove, about 10 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.