Gymea Technology High School vs Sydney Montessori School
A head-to-head comparison of two schools in New South Wales, 989 m apart, using official ACARA 2025 data. Best value in each row is highlighted.
Gymea Technology High School
Gymea · Government high school · 7-12
554 students · ICSEA 1048
Sydney Montessori School
Gymea · Independent combined · K-11
147 students · ICSEA 1118
| Measure | Gymea Technology High School Gymea NSW | Sydney Montessori School Gymea NSW |
|---|---|---|
| Success Index | 60 Top 50% | 74 Top 25% |
| State rank (type) | #204 of 539 | #67 of 314 |
| National rank (type) | #511 of 1,472 | #194 of 1,259 |
| Sector | Government | Independent |
| Type | Secondary | Combined |
| Year range | 7-12 | K-11 |
| Students | 554 | 147 |
| Girls / boys | 212 / 342 | 82 / 65 |
| Foundation intake | – | 26 |
| Year 7 cohort | 108 | 12 |
| Year 12 cohort | 82 | – |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | -15% | +13% |
| ICSEA Average 1000 | 1048 | 1118 |
| ICSEA percentile | 68th | 89th |
| Top SEA quarter | 21% | 50% |
| Bottom SEA quarter | 16% | 6% |
| Students per teacher | 12.5 | 11.0 |
| Teaching staff (FTE) | 44.2 | 13.4 |
| Non-teaching staff (FTE) | 10.5 | 9.0 |
| Language background other than English | 31% | 33% |
| Indigenous students | 4% | 1% |
| Suburb | Gymea 2227 | Gymea 2227 |
| Council area | Sutherland | Sutherland |
| Remoteness | Major Cities | Major Cities |
| Website | gymea-h.schools.nsw.gov.au | www.sms.nsw.edu.au |
The verdict
- •Sydney Montessori School scores higher on the Success Index (74.0 vs 60.2).
- •Sydney Montessori School has the higher ICSEA (1118 vs 1048), indicating a more advantaged community.
- •Sydney Montessori School has fewer students per teacher (11.0 vs 12.5).
- •Gymea Technology High School is the larger school with 554 students compared with 147.
- •Sydney Montessori School has grown faster over five years (13% vs -15%).
- •Gymea Technology High School is a government school while Sydney Montessori School is an independent school, so fees and enrolment rules differ.
The Success Index summarises community advantage, resourcing and momentum from ACARA data. It does not measure teaching quality, results or fit. Methodology.
Free academic assessment
Torn between two schools? Start with your child.
Whichever you choose, a free Success Tutoring assessment shows exactly where your child is in English and Maths and how to get ahead before the next school year.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Your nearest centre: Success Tutoring Hurstville
Frequently asked questions
Is Gymea Technology High School better than Sydney Montessori School?
On the Success Index, Sydney Montessori School ranks higher (74.0 vs 60.2 out of 100). The index measures community advantage and momentum from ACARA data, not teaching quality, so visit both schools before deciding.
How far apart are Gymea Technology High School and Sydney Montessori School?
About 989 m in a straight line, between Gymea and Gymea in New South Wales.
Which has the better student-to-teacher ratio?
Gymea Technology High School has 12.5 students per full-time-equivalent teacher and Sydney Montessori School has 11.0.
How do Gymea Technology High School and Sydney Montessori School rank in NSW?
Gymea Technology High School is 204th of 539 and Sydney Montessori School is 67th of 314 among secondary schools in New South Wales on the 2025 Success Index.