Galstaun College vs German International School Sydney
A head-to-head comparison of two combined schools in New South Wales, 3.9 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
Galstaun College
Ingleside · Independent combined · K-12
328 students · ICSEA 1046
German International School Sydney
Terrey Hills · Independent combined · K-12
380 students · ICSEA 1158
| Measure | Galstaun College Ingleside NSW | German International School Sydney Terrey Hills NSW |
|---|---|---|
| Success Index | 53 Top 50% | 82 Top 10% |
| State rank (type) | #185 of 314 | #31 of 314 |
| National rank (type) | #587 of 1,259 | #76 of 1,259 |
| Sector | Independent | Independent |
| Type | Combined | Combined |
| Year range | K-12 | K-12 |
| Students | 328 | 380 |
| Girls / boys | 171 / 157 | 181 / 199 |
| Foundation intake | 42 | 23 |
| Year 7 cohort | 21 | 42 |
| Year 12 cohort | 29 | 16 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +6% | +16% |
| ICSEA Average 1000 | 1046 | 1158 |
| ICSEA percentile | 67th | 96th |
| Top SEA quarter | 22% | 64% |
| Bottom SEA quarter | 21% | 1% |
| Students per teacher | 10.6 | 9.9 |
| Teaching staff (FTE) | 31.0 | 38.3 |
| Non-teaching staff (FTE) | 7.6 | 13.7 |
| Language background other than English | 98% | 54% |
| Indigenous students | 0% | 0% |
| Suburb | Ingleside 2101 | Terrey Hills 2084 |
| Council area | Northern Beaches | Northern Beaches |
| Remoteness | Major Cities | Major Cities |
| Website | www.galstaun.nsw.edu.au/ | www.giss.nsw.edu.au |
The verdict
- •German International School Sydney scores higher on the Success Index (81.9 vs 53.1).
- •German International School Sydney has the higher ICSEA (1158 vs 1046), indicating a more advantaged community.
- •German International School Sydney has fewer students per teacher (9.9 vs 10.6).
- •German International School Sydney is the larger school with 380 students compared with 328.
- •German International School Sydney has grown faster over five years (16% vs 6%).
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 Dee Why
Frequently asked questions
Is Galstaun College better than German International School Sydney?
On the Success Index, German International School Sydney ranks higher (81.9 vs 53.1 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 Galstaun College and German International School Sydney?
About 3.9 km in a straight line, between Ingleside and Terrey Hills in New South Wales.
Which has the better student-to-teacher ratio?
Galstaun College has 10.6 students per full-time-equivalent teacher and German International School Sydney has 9.9.
How do Galstaun College and German International School Sydney rank in NSW?
Galstaun College is 185th of 314 and German International School Sydney is 31st of 314 among combined schools in New South Wales on the 2025 Success Index.