Oranga School vs St Mary's School (Ellerslie)
A head-to-head comparison of two contributing schools in Auckland, New Zealand, 1.3 km apart, using official New Zealand 2026 data. The better value in each row is highlighted.
Oranga School
One Tree Hill · State contributing · Years 1–6
226 students
St Mary's School (Ellerslie)
Ellerslie · State integrated contributing · Years 1–6
393 students
| Measure | Oranga School One Tree Hill, Auckland | St Mary's School (Ellerslie) Ellerslie, Auckland |
|---|---|---|
| Success Index (NZ) | 56 Top 50% | 90 Top 5% |
| Region rank | #232 of 390 | #19 of 390 |
| National rank | #726 of 1,559 | #21 of 1,559 |
| Sector | State | State integrated |
| Type | Contributing | Contributing |
| Year range | Years 1–6 | Years 1–6 |
| Students | 226 | 393 |
| Equity Index (EQI) | 437 | 367 |
| Total roll | 226 | 393 |
| Roll growth (5 yrs) | -27.4% | 1.6% |
| Leavers with NCEA Level 2+ | – | – |
| Leavers with NCEA Level 3+ | – | – |
| Leavers with University Entrance | – | – |
| Māori students | 16.8% | 7.1% |
| Pacific students | 48.2% | 9.7% |
| International students | 0% | 0% |
| suburb or town | One Tree Hill | Ellerslie |
| region | Auckland | Auckland |
| Website | www.oranga.school.nz | www.stmary.school.nz |
The verdict
- •St Mary's School (Ellerslie) scores higher on the Success Index (NZ) (90.3 vs 55.9).
- •St Mary's School (Ellerslie) does better on equity index (fewer barriers is higher) (367 vs 437).
- •St Mary's School (Ellerslie) does better on roll size (393 vs 226).
- •St Mary's School (Ellerslie) does better on roll growth (5 years) (1.6% vs -27.4%).
- •St Mary's School (Ellerslie) is the larger school with 393 students compared with 226.
- •Oranga School is a state school while St Mary's School (Ellerslie) is a state integrated school, so fees and admission rules differ.
The Success Index (NZ) summarises published results and context from official data. It does not measure teaching quality 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
- Centres across NSW, VIC, QLD, WA, SA and ACT
Frequently asked questions
Is Oranga School better than St Mary's School (Ellerslie)?
On the Success Index (NZ), St Mary's School (Ellerslie) ranks higher (90.3 vs 55.9 out of 100). The index is built from published results and context data, not from teaching quality or fit, so visit both schools before deciding.
How far apart are Oranga School and St Mary's School (Ellerslie)?
About 1.3 km in a straight line, between One Tree Hill and Ellerslie in Auckland.
Which has the better Equity Index (EQI)?
Oranga School: 437. St Mary's School (Ellerslie): 367. Ministry of Education measure of socio-economic barriers faced by students; lower means fewer barriers.
How do Oranga School and St Mary's School (Ellerslie) rank in Auckland?
Oranga School is 232nd of 390 and St Mary's School (Ellerslie) is 19th of 390 among contributing schools in Auckland on the 2026 Success Index (NZ).