Adventure School
Porirua, Wellington Region
Full PrimaryState
Upper Hutt · Wellington Region
Figures on this page come from the New Zealand Ministry of Education school directory export dated 1 September 2026, with roll and ethnicity recorded at the same snapshot. Always confirm enrolment, zoning and fees directly with the school. About this directory
Trentham School is a co-educational contributing school in Upper Hutt, within the Wellington Region, operating in the state sector, with 377 students on roll, and an Equity Index of 464. The school has been open since 2005.
With 377 students on roll, Trentham School is a large school — larger than about 71% of New Zealand schools.
The school's Equity Index is 464, which is close to the national average of 463. That means the roll faces a broadly typical level of socio-economic challenge compared with schools across Aotearoa.
The roll is genuinely diverse: no single ethnic group dominates, with European at 47.6% and Asian at 25.9%. Diversity of this kind is common in urban New Zealand schools.
On the isolation index the school scores 0.08 (very low isolation) — this measures how far students travel and how accessible the school is, not how good it is.
Total roll recorded: 377 students, from the 2026 roll census. Percentages may not sum to exactly 100% because of rounding and students who decline to state an ethnicity.
Porirua, Wellington Region
Full PrimaryState
Wellington, Wellington Region
Secondary (Year 7-15)Charter School
Wellington, Wellington Region
ContributingState