Sydney Montessori School
Updated Oct 2026 · ACARA 2025Gymea, New South Wales 2227 · Sutherland LGA
#67 of 314 combined schools in NSW
#194 of 1,259 nationally
About Sydney Montessori School
Sydney Montessori School is an independent combined (K–12) school located in Gymea, New South Wales (2227), within the Sutherland local government area. It caters for students from K to 11 and in 2025 enrolled 147 students (82 girls and 65 boys). The school is affiliated with Independent Schools NSW.
Sydney Montessori School has an ICSEA value of 1118, indicating very high socio-educational advantage. That places it in the 89th percentile of Australian schools. 50% of students come from the top socio-educational quarter and 6% from the bottom quarter.
The school employs 18 teachers (13.4 full-time equivalent) and 15 non-teaching staff, giving a student-to-teacher ratio of about 11.0 to 1. Enrolments have grown by 13% over the past five years.
On the Success Index, Sydney Montessori School scores 74.0 out of 100, placing it in the top 25% of combined schools nationally and 67th of 314 combined schools in NSW (1st of 4 in the Sutherland area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1118
- Students in the top advantage quarter (15%)50% of students
- Teacher resourcing (students per teacher) (15%)11.0 students per teacher
- Enrolment growth vs local area (5 years) (10%)+13% enrolments since 2020 (area median +10%)
- ICSEA trend (5 years) (10%)+36 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 Sydney Montessori School's 147 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Sydney Montessori School have changed over the past decade.
Free academic assessment
Is your child on track at Sydney Montessori 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.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
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- Your nearest centre: Success Tutoring Hurstville
Schools near Sydney Montessori School
Closest schools by straight-line distance, with their Success Index.
St Catherine Labouré Catholic Primary School
Gymea · Catholic primary · K-6
596 students · ICSEA 1109 · 381 m away
Miranda Public School
Miranda · Government primary · K-6
300 students · ICSEA 1024 · 946 m away
Gymea Technology High School
Gymea · Government high school · 7-12
554 students · ICSEA 1048 · 989 m away
Kirrawee Public School
Kirrawee · Government primary · K-6
326 students · ICSEA 1050 · 1.1 km away
Gymea Bay Public School
Gymea Bay · Government primary · K-6
763 students · ICSEA 1091 · 1.1 km away
Port Hacking High School
Miranda · Government high school · 7-12
950 students · ICSEA 1050 · 1.1 km away
Gymea North Public School
Gymea · Government primary · K-6
362 students · ICSEA 1075 · 1.3 km away
Kirrawee High School
Kirrawee · Government high school · 7-12
1,185 students · ICSEA 1092 · 1.5 km away
Our Lady Star of the Sea Catholic Primary School Miranda
Miranda · Catholic primary · K-6
396 students · ICSEA 1090 · 1.6 km away
Yowie Bay Public School
Yowie Bay · Government primary · K-6
329 students · ICSEA 1093 · 1.6 km away
Similar schools
Independent combined schools in NSW with a comparable ICSEA.
Pacific Hills Christian School
Dural · Independent combined · K-12
1,475 students · ICSEA 1118
Lindisfarne Anglican Grammar School
Terranora · Independent combined · K-12
2,008 students · ICSEA 1117
Hartford College
Daceyville · Independent combined · 5-9
29 students · ICSEA 1117
Shire Christian School
Barden Ridge · Independent combined · K-12
926 students · ICSEA 1116
St Columba Anglican School
Port Macquarie · Independent combined · K-12
1,221 students · ICSEA 1116
St Paul's Grammar School
Cranebrook · Independent combined · K-12
824 students · ICSEA 1121
Frequently asked questions
Is Sydney Montessori School a public or private school?
Sydney Montessori School is a Independent school, which makes it a non-government (private) school affiliated with Independent Schools NSW.
What year levels does Sydney Montessori School offer?
Sydney Montessori School offers K to 11. It is classified by ACARA as a combined school.
How many students attend Sydney Montessori School?
In 2025, Sydney Montessori School had 147 enrolled students (82 girls, 65 boys), a change of 13% over five years.
What is the ICSEA of Sydney Montessori School?
Sydney Montessori School has an ICSEA (Index of Community Socio-Educational Advantage) of 1118. The national average is 1000, so this indicates very high socio-educational advantage. ICSEA reflects the school community, not teaching quality.
How does Sydney Montessori School rank in NSW?
Sydney Montessori School ranks 67th of 314 combined schools in New South Wales on the Success Index (74.0/100), and 194th of 1,259 nationally.
What is the student-to-teacher ratio at Sydney Montessori School?
Sydney Montessori School has about 11.0 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Sydney Montessori School?
In 2025, Sydney Montessori School had 12 students in Year 7.
Is Sydney Montessori School co-ed?
Yes. Sydney Montessori School is a co-educational school enrolling both girls and boys.
What other schools are near Sydney Montessori School?
There are 10 other schools within 15 km of Sydney Montessori 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 Sydney Montessori School?
The closest Success Tutoring centre is Success Tutoring Hurstville, about 8.2 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.