Last updated October 2026
Onslow College is a state, co-educational secondary school for Years 9 to 13 at Burma Road, Johnsonville, Wellington. It opened in 1956 and had 1,180 students on its roll at 1 September 2026.
Its home zone includes 8 suburbs in full and parts of 7 more, among them Northland, Broadmeadows, Ngaio, Wadestown, Crofton Downs and Johnsonville; the zone map below shows the full boundary.
The school’s site describes te reo Māori as a compulsory full-year subject in Year 9 and available through to Year 13, a whare ako called Te Ara a Māui for Māori students and kaupapa Māori, a kapa haka group, and art, drama and music from Year 9 with more arts options from Year 12. Its Learning Support department works with students who have ORS funding or learning differences such as dyslexia, and the school also has an Ako pastoral system, a wide sports programme and an international student programme with homestays.
At a glance
- Principal
- Jono Wyeth
- Address
- Burma Road, Johnsonville, Wellington
- Phone
- 04 478 8189
Home zone
Suburbs in the zone: all of Wadestown Wellington, Ngaio Wellington, Broadmeadows Wellington, Northland, Crofton Downs Wellington, Khandallah Wellington, Churton Park Wellington and Johnsonville Wellington.
Parts of Kaiwharawhara Wellington, Thorndon Wellington, Wilton, Ngauranga, Ohariu Wellington, Glenside Wellington and Pipitea: check your street.
Zone boundaries are set by the school’s enrolment scheme and can change. Confirm your address with the school before you rely on it.
NCEA results
School leavers with NCEA Level 2 or above, compared with all New Zealand school leavers.
This school New Zealand
School leavers are students who left school that year, whatever year level they left from.
Who goes here
Share of the 1,180 students who identify with each group. Students can name more than one, so these add up to more than 100%.
40 international students
MELAA: Middle Eastern, Latin American and African.
Stand-downs and suspensions
Cases per 1,000 students in 2025, adjusted for the ages of the school’s students, compared with all New Zealand schools.
Suspensions: fewer than 5 cases in 2025, so no rate is shown.
These measure how a school responds to behaviour, and schools set their own thresholds, so they are not a measure of how students behave.
What ERO found
The Education Review Office’s latest report on the school is a Te Ara Huarau School Profile Report from December 2022. This kind of report sets out what ERO and the school will look at together, here how well teaching and learning match research-based signs of effective practice, with the aims of better outcomes for Māori students and a strong sense of belonging for every student.
ERO noted the board’s and the school’s commitment to honouring Te Tiriti o Waitangi as full partners, staff who are keen to learn and bring that into their teaching, a growing partnership with Te Ātiawa Taranaki Whānui in the school’s push for equity, Māori teachers whose cultural knowledge helps guide other staff, and strong middle leadership.
Next, the school planned for senior leaders and teachers to build an Onslow College profile of effective teaching grounded in research, to develop a shared understanding of how restorative practice, universal design for learning, learning conversations and student data support that profile, and to develop its curriculum in a visible way with a clear focus on equity.
Read the ERO reports for Onslow College
Enrolling
Onslow College has an enrolment scheme, so students who live in the home zone have the right to enrol, and in-zone applications are accepted at any time. Out-of-zone places are set by the board each year and offered under the scheme, by ballot when there are more applicants than places.
Families living out of zone whose child has whakapapa to Te Ātiawa Taranaki Whānui or Ngāti Toa Rangatira can contact the school about the child’s right to attend as mana whenua.
Enrolment is online. The school publishes its out-of-zone application and ballot dates on its enrolment page each year, and its zoning page describes the zone boundary street by street.
Schools nearby
In Johnsonville Wellington
Onslow College is in Johnsonville Wellington. Our suburb guide covers what it is like to live there, with parks, places and local businesses.
Read our Johnsonville Wellington guide →Questions parents ask
Is Onslow College zoned?
It has a home zone covering all of Wadestown Wellington, Ngaio Wellington, Broadmeadows Wellington, Northland, Crofton Downs Wellington, Khandallah Wellington, Churton Park Wellington and Johnsonville Wellington and parts of Kaiwharawhara Wellington, Thorndon Wellington, Wilton, Ngauranga, Ohariu Wellington, Glenside Wellington and Pipitea.
What years does it teach?
Years 9 to 13.
How many students go there?
1,180 at 1 Sep 2026.
Does it ask for donations?
It may. It is not in the donation scheme, so it can ask families for donations.
What is its Equity Index?
398. The Ministry of Education’s Equity Index estimates the socio-economic barriers a school’s students face, from 344 (fewest) to 569 (most). It is used to share out funding, not as a measure of quality.
How did its school leavers do in NCEA?
In 2025, 89.3% of its school leavers had NCEA Level 2 or above, compared with 77.8% of all New Zealand school leavers.
Updated automatically when the Ministry publishes new data.
Spotted something incorrect on this page? Let us know.
Sources and data notes 1
- School facts: School details and roll: Ministry of Education school directory, 28 Oct 2026 (CC BY 4.0). Home zone: Ministry of Education enrolment zones (CC BY 4.0). NCEA results, roll history and stand-downs: Education Counts, school leavers 2023 to 2025, stand-downs 2025, rolls 2021 to 2025 (CC BY 4.0).