Onslow College vs St Benedict's School (Khandallah)
A head-to-head comparison of two schools in Wellington, New Zealand, 2.0 km apart, using official New Zealand 2026 data. The better value in each row is highlighted.
Onslow College
Johnsonville · State secondary (year 9-15) · Years 9–13
1,180 students
St Benedict's School (Khandallah)
Khandallah · State integrated full primary · Years 1–8
205 students
| Measure | Onslow College Johnsonville, Wellington | St Benedict's School (Khandallah) Khandallah, Wellington |
|---|---|---|
| Success Index (NZ) | 74 Top 25% | 79 Top 10% |
| Region rank | #9 of 46 | #25 of 176 |
| National rank | #80 of 486 | #184 of 1,559 |
| Sector | State | State integrated |
| Type | Secondary (Year 9-15) | Full Primary |
| Year range | Years 9–13 | Years 1–8 |
| Students | 1,180 | 205 |
| Equity Index (EQI) | 398 | 350 |
| Total roll | 1,180 | 205 |
| Roll growth (5 yrs) | -4.9% | -24.8% |
| Leavers with NCEA Level 2+ | 89.3% | – |
| Leavers with NCEA Level 3+ | – | – |
| Leavers with University Entrance | 73.7% | – |
| Māori students | 12.3% | 2.4% |
| Pacific students | 3.9% | 2.4% |
| International students | 3.4% | 0% |
| suburb or town | Johnsonville | Khandallah |
| region | Wellington | Wellington |
| Website | www.onslow.school.nz | www.st-benedicts.school.nz |
The verdict
- •St Benedict's School (Khandallah) scores higher on the Success Index (NZ) (78.7 vs 73.5).
- •St Benedict's School (Khandallah) does better on equity index (fewer barriers is higher) (350 vs 398).
- •Onslow College does better on roll size (1,180 vs 205).
- •Onslow College does better on roll growth (5 years) (-4.9% vs -24.8%).
- •Onslow College is the larger school with 1,180 students compared with 205.
- •Onslow College is a state school while St Benedict's School (Khandallah) 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.
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Frequently asked questions
Is Onslow College better than St Benedict's School (Khandallah)?
On the Success Index (NZ), St Benedict's School (Khandallah) ranks higher (78.7 vs 73.5 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 Onslow College and St Benedict's School (Khandallah)?
About 2.0 km in a straight line, between Johnsonville and Khandallah in Wellington.
Which has the better Equity Index (EQI)?
Onslow College: 398. St Benedict's School (Khandallah): 350. Ministry of Education measure of socio-economic barriers faced by students; lower means fewer barriers.
How do Onslow College and St Benedict's School (Khandallah) rank in Wellington?
Onslow College is 9th of 46 and St Benedict's School (Khandallah) is 25th of 176 among secondary (year 9-15) schools in Wellington on the 2026 Success Index (NZ).