Holy Cross Catholic Primary School vs OneSchool Global NSW - Illawarra
A head-to-head comparison of two schools in New South Wales, 7.7 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
Holy Cross Catholic Primary School
Helensburgh · Catholic primary · K-6
184 students · ICSEA 1071
OneSchool Global NSW - Illawarra
Maddens Plains · Independent combined · 3-12
159 students · ICSEA 973
| Measure | Holy Cross Catholic Primary School Helensburgh NSW | OneSchool Global NSW - Illawarra Maddens Plains NSW |
|---|---|---|
| Success Index | 69 Top 25% | 31 Lower 50% |
| State rank (type) | #357 of 1,619 | #281 of 314 |
| National rank (type) | #1146 of 4,908 | #1050 of 1,259 |
| Sector | Catholic | Independent |
| Type | Primary | Combined |
| Year range | K-6 | 3-12 |
| Students | 184 | 159 |
| Girls / boys | 97 / 87 | 75 / 84 |
| Foundation intake | 27 | – |
| Year 7 cohort | – | 7 |
| Year 12 cohort | – | 15 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +7% | – |
| ICSEA Average 1000 | 1071 | 973 |
| ICSEA percentile | 76th | 34th |
| Top SEA quarter | 33% | 0% |
| Bottom SEA quarter | 11% | 49% |
| Students per teacher | 15.2 | 9.9 |
| Teaching staff (FTE) | 12.1 | 16.0 |
| Non-teaching staff (FTE) | 3.5 | 7.5 |
| Language background other than English | 4% | 0% |
| Indigenous students | 7% | 0% |
| Suburb | Helensburgh 2508 | Maddens Plains 2508 |
| Council area | Wollongong | Wollongong |
| Remoteness | Major Cities | Inner Regional |
| Website | www.hchdow.catholic.edu.au | www.oneschoolglobal.com/campus/australia/illawarra/ |
The verdict
- •Holy Cross Catholic Primary School scores higher on the Success Index (68.6 vs 31.1).
- •Holy Cross Catholic Primary School has the higher ICSEA (1071 vs 973), indicating a more advantaged community.
- •OneSchool Global NSW - Illawarra has fewer students per teacher (9.9 vs 15.2).
- •Holy Cross Catholic Primary School is the larger school with 184 students compared with 159.
- •Holy Cross Catholic Primary School is a catholic school while OneSchool Global NSW - Illawarra 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.
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Frequently asked questions
Is Holy Cross Catholic Primary School better than OneSchool Global NSW - Illawarra?
On the Success Index, Holy Cross Catholic Primary School ranks higher (68.6 vs 31.1 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 Holy Cross Catholic Primary School and OneSchool Global NSW - Illawarra?
About 7.7 km in a straight line, between Helensburgh and Maddens Plains in New South Wales.
Which has the better student-to-teacher ratio?
Holy Cross Catholic Primary School has 15.2 students per full-time-equivalent teacher and OneSchool Global NSW - Illawarra has 9.9.
How do Holy Cross Catholic Primary School and OneSchool Global NSW - Illawarra rank in NSW?
Holy Cross Catholic Primary School is 357th of 1,619 and OneSchool Global NSW - Illawarra is 281st of 314 among primary schools in New South Wales on the 2025 Success Index.