Marist Catholic College Penshurst vs St Declan's Catholic Primary School
A head-to-head comparison of two schools in New South Wales, 599 m apart, using official ACARA 2025 data. Best value in each row is highlighted.
Marist Catholic College Penshurst
Mortdale · Catholic high school · 7-12
1,343 students · ICSEA 1090
St Declan's Catholic Primary School
Penshurst · Catholic primary · K-6
539 students · ICSEA 1108
| Measure | Marist Catholic College Penshurst Mortdale NSW | St Declan's Catholic Primary School Penshurst NSW |
|---|---|---|
| Success Index | 73 Top 25% | 71 Top 25% |
| State rank (type) | #69 of 539 | #278 of 1,619 |
| National rank (type) | #197 of 1,472 | #942 of 4,908 |
| Sector | Catholic | Catholic |
| Type | Secondary | Primary |
| Year range | 7-12 | K-6 |
| Students | 1,343 | 539 |
| Girls / boys | 680 / 663 | 247 / 292 |
| Foundation intake | – | 92 |
| Year 7 cohort | 238 | – |
| Year 12 cohort | 202 | – |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +34% | +27% |
| ICSEA Average 1000 | 1090 | 1108 |
| ICSEA percentile | 81th | 86th |
| Top SEA quarter | 34% | 41% |
| Bottom SEA quarter | 7% | 5% |
| Students per teacher | 13.9 | 16.9 |
| Teaching staff (FTE) | 96.4 | 31.8 |
| Non-teaching staff (FTE) | 25.7 | 8.3 |
| Language background other than English | 70% | 69% |
| Indigenous students | 2% | 1% |
| Suburb | Mortdale 2223 | Penshurst 2222 |
| Council area | Georges River | Georges River |
| Remoteness | Major Cities | Major Cities |
| Website | maristpenshurst.syd.catholic.edu.au | stdpenshurst.syd.catholic.edu.au |
The verdict
- •Marist Catholic College Penshurst scores higher on the Success Index (73.4 vs 70.9).
- •St Declan's Catholic Primary School has the higher ICSEA (1108 vs 1090), indicating a more advantaged community.
- •Marist Catholic College Penshurst has fewer students per teacher (13.9 vs 16.9).
- •Marist Catholic College Penshurst is the larger school with 1,343 students compared with 539.
- •Marist Catholic College Penshurst has grown faster over five years (34% vs 27%).
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 Marist Catholic College Penshurst better than St Declan's Catholic Primary School?
On the Success Index, Marist Catholic College Penshurst ranks higher (73.4 vs 70.9 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 Marist Catholic College Penshurst and St Declan's Catholic Primary School?
About 599 m in a straight line, between Mortdale and Penshurst in New South Wales.
Which has the better student-to-teacher ratio?
Marist Catholic College Penshurst has 13.9 students per full-time-equivalent teacher and St Declan's Catholic Primary School has 16.9.
How do Marist Catholic College Penshurst and St Declan's Catholic Primary School rank in NSW?
Marist Catholic College Penshurst is 69th of 539 and St Declan's Catholic Primary School is 278th of 1,619 among secondary schools in New South Wales on the 2025 Success Index.