Marlborough Girls' College vs St Mary's School (Blenheim)
A head-to-head comparison of two schools in Marlborough, New Zealand, 1.3 km apart, using official New Zealand 2026 data. The better value in each row is highlighted.
Marlborough Girls' College
Springlands · State secondary (year 9-15) · Years 9–13
961 students
St Mary's School (Blenheim)
Blenheim · State integrated full primary · Years 1–8
176 students
| Measure | Marlborough Girls' College Springlands, Marlborough | St Mary's School (Blenheim) Blenheim, Marlborough |
|---|---|---|
| Success Index (NZ) | 60 Top 50% | 60 Top 50% |
| Region rank | #2 of 5 | #4 of 17 |
| National rank | #172 of 486 | #622 of 1,559 |
| Sector | State | State integrated |
| Type | Secondary (Year 9-15) | Full Primary |
| Year range | Years 9–13 | Years 1–8 |
| Students | 961 | 176 |
| Equity Index (EQI) | 455 | 440 |
| Total roll | 961 | 176 |
| Roll growth (5 yrs) | 4.2% | 7.1% |
| Leavers with NCEA Level 2+ | 79.4% | – |
| Leavers with NCEA Level 3+ | – | – |
| Leavers with University Entrance | 60% | – |
| Māori students | 23.9% | 19.3% |
| Pacific students | 9.1% | 17% |
| International students | 1.2% | 0% |
| suburb or town | Springlands | Blenheim |
| region | Marlborough | Marlborough |
| Website | www.mgc.school.nz | stmb.school.nz/ |
The verdict
- •Both schools have almost identical Success Index (NZ) scores (59.8 vs 60.3).
- •St Mary's School (Blenheim) does better on equity index (fewer barriers is higher) (440 vs 455).
- •Marlborough Girls' College does better on roll size (961 vs 176).
- •St Mary's School (Blenheim) does better on roll growth (5 years) (7.1% vs 4.2%).
- •Marlborough Girls' College is the larger school with 961 students compared with 176.
- •Marlborough Girls' College is a state school while St Mary's School (Blenheim) is a state integrated school, so fees and admission rules differ.
- •Marlborough Girls' College is girls and St Mary's School (Blenheim) is co-educational.
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 Marlborough Girls' College better than St Mary's School (Blenheim)?
The two schools are very close on the Success Index (NZ). Differences in sector, size, programmes and distance from home will matter more than the score.
How far apart are Marlborough Girls' College and St Mary's School (Blenheim)?
About 1.3 km in a straight line, between Springlands and Blenheim in Marlborough.
Which has the better Equity Index (EQI)?
Marlborough Girls' College: 455. St Mary's School (Blenheim): 440. Ministry of Education measure of socio-economic barriers faced by students; lower means fewer barriers.
How do Marlborough Girls' College and St Mary's School (Blenheim) rank in Marlborough?
Marlborough Girls' College is 2nd of 5 and St Mary's School (Blenheim) is 4th of 17 among secondary (year 9-15) schools in Marlborough on the 2026 Success Index (NZ).