New Zealand vs Tonga: Theoretical duration of secondary education
New Zealand
7 years
in 2025
Tonga
7 years
in 2025
New Zealand rank
26th
Tonga rank
26th
Theoretical duration of secondary education over time
- New Zealand
- Tonga
How they compare
New Zealand currently reports 7 years against 7 years in Tonga, a difference of 0 years.
The two have swapped places 3 times across 56 shared years of data; in 1970 it was New Zealand ahead.
New Zealand ranks 26th and Tonga ranks 26th of 215 countries.
New Zealand has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | New Zealand | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 7 years | 6 years | 1 years | New Zealand |
| 1980s | 7 years | 6.6 years | 0.4 years | New Zealand |
| 1990s | 7 years | 6.8 years | 0.2 years | New Zealand |
| 2000s | 7 years | 6 years | 1 years | New Zealand |
| 2010s | 7 years | 6.8 years | 0.2 years | New Zealand |
| 2020s | 7 years | 7 years | 0 years | — |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher theoretical duration of secondary education, New Zealand or Tonga?
- New Zealand, at 7 years against 7 years in Tonga as of 2025.
- What is the difference in theoretical duration of secondary education between New Zealand and Tonga?
- 0 years, with New Zealand ahead.
- How many years of comparable data are there for New Zealand and Tonga?
- 56 years are reported by both, from 1970 to 2025.
- How do New Zealand and Tonga rank globally for theoretical duration of secondary education?
- New Zealand ranks 26th and Tonga ranks 26th of 215 countries.
- Where does this data come from?
- UNESCO Institute for Statistics, published as Theoretical duration of secondary education (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
February 2026 Data Release