Inner Sydney Montessori School
Updated Oct 2026 · ACARA 2025Balmain, New South Wales 2041 · Inner West LGA
#21 of 1,619 primary schools in NSW
#83 of 4,908 nationally
About Inner Sydney Montessori School
Inner Sydney Montessori School is an independent primary school located in Balmain, New South Wales (2041), within the Inner West local government area. It caters for students from K to 6 and in 2025 enrolled 95 students (40 girls and 55 boys). The school is affiliated with Independent Schools NSW.
Inner Sydney Montessori 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 17 teachers (14.8 full-time equivalent) and 30 non-teaching staff, giving a student-to-teacher ratio of about 6.4 to 1. Enrolments have fallen by 42% over the past five years.
On the Success Index, Inner Sydney Montessori School scores 83.0 out of 100, placing it in the top 5% of primary schools nationally and 21st of 1,619 primary schools in NSW (6th of 36 in the Inner West 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%)6.4 students per teacher
- Enrolment growth vs local area (5 years) (10%)-42% enrolments since 2020 (area median -15%)
- ICSEA trend (5 years) (10%)-1 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 Inner Sydney Montessori School's 95 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Inner Sydney Montessori School have changed over the past decade.
Free academic assessment
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Schools near Inner Sydney Montessori School
Closest schools by straight-line distance, with their Success Index.
Balmain Public School
Balmain · Government primary · K-6
321 students · ICSEA 1172 · 655 m away
Fr John Therry Catholic Primary School Balmain - Rozelle
Balmain · Catholic primary · K-6
349 students · ICSEA 1170 · 717 m away
Rozelle Public School
Rozelle · Government primary · P-6
507 students · ICSEA 1162 · 750 m away
Sydney Secondary College Balmain Campus
Rozelle · Government high school · 7-10
854 students · ICSEA 1112 · 867 m away
Birchgrove Public School
Balmain · Government primary · P-6
214 students · ICSEA 1132 · 1.1 km away
St Scholastica's College Glebe Point
Glebe · Independent high school · 7-12
1,044 students · ICSEA 1138 · 1.5 km away
Nicholson Street Public School
Balmain East · Government primary · K-6
95 students · ICSEA 1151 · 1.6 km away
Sydney Secondary College Blackwattle Bay Campus
Glebe · Government high school · 11-12
798 students · ICSEA 1094 · 1.7 km away
Annandale North Public School
Annandale · Government primary · K-6
359 students · ICSEA 1148 · 1.8 km away
St James Catholic Primary School
Glebe · Catholic primary · K-6
152 students · ICSEA 1125 · 2.0 km away
Similar schools
Independent primary schools in NSW with a comparable ICSEA.
Cameragal Montessori School
North Sydney · Independent primary · K-6
40 students · ICSEA 1179
Toronto Adventist School
Toronto · Independent primary · K-6
43 students · ICSEA 1173
International Chinese School
St Leonards · Independent primary · K-6
116 students · ICSEA 1172
Forestville Montessori School
Forestville · Independent primary · K-6
49 students · ICSEA 1171
Montessori East
Bondi · Independent primary · K-6
80 students · ICSEA 1188
Farmhouse Montessori School
North Balgowlah · Independent primary · K-6
37 students · ICSEA 1165
Frequently asked questions
Is Inner Sydney Montessori School a public or private school?
Inner Sydney Montessori School is a Independent school, which makes it a non-government (private) school affiliated with Independent Schools NSW.
What year levels does Inner Sydney Montessori School offer?
Inner Sydney Montessori School offers K to 6. It is classified by ACARA as a primary school.
How many students attend Inner Sydney Montessori School?
In 2025, Inner Sydney Montessori School had 95 enrolled students (40 girls, 55 boys), a change of -42% over five years.
What is the ICSEA of Inner Sydney Montessori School?
Inner Sydney Montessori 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 Inner Sydney Montessori School rank in NSW?
Inner Sydney Montessori School ranks 21st of 1,619 primary schools in New South Wales on the Success Index (83.0/100), and 83rd of 4,908 nationally.
What is the student-to-teacher ratio at Inner Sydney Montessori School?
Inner Sydney Montessori School has about 6.4 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How many students start Kindergarten at Inner Sydney Montessori School each year?
In 2025, Inner Sydney Montessori School had 16 students in Kindergarten and 3 in Year 6.
Is Inner Sydney Montessori School co-ed?
Yes. Inner Sydney Montessori School is a co-educational school enrolling both girls and boys.
What other schools are near Inner Sydney Montessori School?
There are 10 other schools within 15 km of Inner 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 Inner Sydney Montessori School?
The closest Success Tutoring centre is Success Tutoring Lane Cove, about 5.4 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.