Balcombe Grammar School vs Osborne Primary School
A head-to-head comparison of two schools in Victoria, 2.0 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
Balcombe Grammar School
Mount Martha · Independent combined · Prep-12
954 students · ICSEA 1096
Osborne Primary School
Mount Martha · Government primary · Prep-6
638 students · ICSEA 1071
| Measure | Balcombe Grammar School Mount Martha VIC | Osborne Primary School Mount Martha VIC |
|---|---|---|
| Success Index | 63 Top 50% | 67 Top 25% |
| State rank (type) | #120 of 239 | #487 of 1,290 |
| National rank (type) | #413 of 1,259 | #1327 of 4,908 |
| Sector | Independent | Government |
| Type | Combined | Primary |
| Year range | Prep-12 | Prep-6 |
| Students | 954 | 638 |
| Girls / boys | 480 / 474 | 300 / 338 |
| Foundation intake | 50 | 95 |
| Year 7 cohort | 104 | – |
| Year 12 cohort | 92 | – |
| VCE median study score VCAA, latest year | 31 | – |
| VCE study scores 40+ | 9.6% | – |
| 5-year enrolment growth | +6% | -3% |
| ICSEA Average 1000 | 1096 | 1071 |
| ICSEA percentile | 83th | 76th |
| Top SEA quarter | 34% | 27% |
| Bottom SEA quarter | 5% | 12% |
| Students per teacher | 12.6 | 15.6 |
| Teaching staff (FTE) | 75.5 | 40.8 |
| Non-teaching staff (FTE) | 42.9 | 12.8 |
| Language background other than English | 7% | 6% |
| Indigenous students | 1% | 1% |
| Suburb | Mount Martha 3934 | Mount Martha 3934 |
| Council area | Mornington Peninsula | Mornington Peninsula |
| Remoteness | Major Cities | Major Cities |
| Website | www.balcombegrammar.vic.edu.au | www.osborneps.vic.edu.au |
The verdict
- •Osborne Primary School scores higher on the Success Index (66.6 vs 62.5).
- •Balcombe Grammar School has the higher ICSEA (1096 vs 1071), indicating a more advantaged community.
- •Balcombe Grammar School has fewer students per teacher (12.6 vs 15.6).
- •Balcombe Grammar School is the larger school with 954 students compared with 638.
- •Balcombe Grammar School has grown faster over five years (6% vs -3%).
- •Balcombe Grammar School is a independent school while Osborne Primary School is a government 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.
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Frequently asked questions
Is Balcombe Grammar School better than Osborne Primary School?
On the Success Index, Osborne Primary School ranks higher (66.6 vs 62.5 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 Balcombe Grammar School and Osborne Primary School?
About 2.0 km in a straight line, between Mount Martha and Mount Martha in Victoria.
Which has the better student-to-teacher ratio?
Balcombe Grammar School has 12.6 students per full-time-equivalent teacher and Osborne Primary School has 15.6.
How do Balcombe Grammar School and Osborne Primary School rank in VIC?
Balcombe Grammar School is 120th of 239 and Osborne Primary School is 487th of 1,290 among combined schools in Victoria on the 2025 Success Index.