Holy Trinity School vs St Catherine's School
A head-to-head comparison of two primary schools in Victoria, 18 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
Holy Trinity School
Wantirna South · Catholic primary · Prep-6
210 students · ICSEA 1083
St Catherine's School
Moorabbin · Catholic primary · Prep-6
85 students · ICSEA 1083
| Measure | Holy Trinity School Wantirna South VIC | St Catherine's School Moorabbin VIC |
|---|---|---|
| Success Index | 69 Top 25% | 69 Top 25% |
| State rank (type) | #427 of 1,290 | #441 of 1,290 |
| National rank (type) | #1075 of 4,908 | #1113 of 4,908 |
| Sector | Catholic | Catholic |
| Type | Primary | Primary |
| Year range | Prep-6 | Prep-6 |
| Students | 210 | 85 |
| Girls / boys | 99 / 111 | 40 / 45 |
| Foundation intake | 24 | 11 |
| Year 7 cohort | – | – |
| Year 12 cohort | – | – |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | -30% | -24% |
| ICSEA Average 1000 | 1083 | 1083 |
| ICSEA percentile | 79th | 80th |
| Top SEA quarter | 31% | 32% |
| Bottom SEA quarter | 10% | 12% |
| Students per teacher | 12.9 | 10.2 |
| Teaching staff (FTE) | 16.3 | 8.3 |
| Non-teaching staff (FTE) | 8.0 | 5.4 |
| Language background other than English | 33% | 15% |
| Indigenous students | 0% | 0% |
| Suburb | Wantirna South 3152 | Moorabbin 3189 |
| Council area | Knox | Kingston (Vic.) |
| Remoteness | Major Cities | Major Cities |
| Website | www.htws.catholic.edu.au | www.scmoorabbin.catholic.edu.au/ |
The verdict
- •Both schools have almost identical Success Index scores (69.3 vs 69.0).
- •St Catherine's School has fewer students per teacher (10.2 vs 12.9).
- •Holy Trinity School is the larger school with 210 students compared with 85.
- •St Catherine's School has grown faster over five years (-24% vs -30%).
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 Trinity School better than St Catherine's School?
The two schools are very close on the Success Index. Differences in sector, size, year range and distance from home will matter more than the score.
How far apart are Holy Trinity School and St Catherine's School?
About 18 km in a straight line, between Wantirna South and Moorabbin in Victoria.
Which has the better student-to-teacher ratio?
Holy Trinity School has 12.9 students per full-time-equivalent teacher and St Catherine's School has 10.2.
How do Holy Trinity School and St Catherine's School rank in VIC?
Holy Trinity School is 427th of 1,290 and St Catherine's School is 441st of 1,290 among primary schools in Victoria on the 2025 Success Index.