Diamond Harbour School vs Our Lady Star of the Sea School (Christchurch)
A head-to-head comparison of two full primary schools in Canterbury, New Zealand, 6.8 km apart, using official New Zealand 2026 data. The better value in each row is highlighted.
Diamond Harbour School
Diamond Harbour · State full primary · Years 1–8
122 students
Our Lady Star of the Sea School (Christchurch)
Sumner · State integrated full primary · Years 1–8
106 students
| Measure | Diamond Harbour School Diamond Harbour, Canterbury | Our Lady Star of the Sea School (Christchurch) Sumner, Canterbury |
|---|---|---|
| Success Index (NZ) | 65 Top 50% | 72 Top 25% |
| Region rank | #74 of 187 | #51 of 187 |
| National rank | #502 of 1,559 | #349 of 1,559 |
| Sector | State | State integrated |
| Type | Full Primary | Full Primary |
| Year range | Years 1–8 | Years 1–8 |
| Students | 122 | 106 |
| Equity Index (EQI) | 412 | 401 |
| Total roll | 122 | 106 |
| Roll growth (5 yrs) | -4.9% | 118.8% |
| Leavers with NCEA Level 2+ | – | – |
| Leavers with NCEA Level 3+ | – | – |
| Leavers with University Entrance | – | – |
| Māori students | 9% | 12.3% |
| Pacific students | 2.5% | 0% |
| International students | 0% | 0% |
| suburb or town | Diamond Harbour | Sumner |
| region | Canterbury | Canterbury |
| Website | www.diamondharbour.school.nz | www.ourladystar.school.nz |
The verdict
- •Our Lady Star of the Sea School (Christchurch) scores higher on the Success Index (NZ) (71.7 vs 64.8).
- •Our Lady Star of the Sea School (Christchurch) does better on equity index (fewer barriers is higher) (401 vs 412).
- •Diamond Harbour School does better on roll size (122 vs 106).
- •Our Lady Star of the Sea School (Christchurch) does better on roll growth (5 years) (118.8% vs -4.9%).
- •Diamond Harbour School is the larger school with 122 students compared with 106.
- •Diamond Harbour School is a state school while Our Lady Star of the Sea School (Christchurch) 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 Diamond Harbour School better than Our Lady Star of the Sea School (Christchurch)?
On the Success Index (NZ), Our Lady Star of the Sea School (Christchurch) ranks higher (71.7 vs 64.8 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 Diamond Harbour School and Our Lady Star of the Sea School (Christchurch)?
About 6.8 km in a straight line, between Diamond Harbour and Sumner in Canterbury.
Which has the better Equity Index (EQI)?
Diamond Harbour School: 412. Our Lady Star of the Sea School (Christchurch): 401. Ministry of Education measure of socio-economic barriers faced by students; lower means fewer barriers.
How do Diamond Harbour School and Our Lady Star of the Sea School (Christchurch) rank in Canterbury?
Diamond Harbour School is 74th of 187 and Our Lady Star of the Sea School (Christchurch) is 51st of 187 among full primary schools in Canterbury on the 2026 Success Index (NZ).