New Zealand vs Sierra Leone: Theoretical duration of secondary education
New Zealand
7 years
in 2025
Sierra Leone
7 years
in 2025
New Zealand rank
26th
Sierra Leone rank
26th
Theoretical duration of secondary education over time
- New Zealand
- Sierra Leone
How they compare
New Zealand currently reports 7 years against 7 years in Sierra Leone, a difference of 0 years.
The two have swapped places 2 times across 56 shared years of data; in 1970 it was Sierra Leone ahead.
New Zealand ranks 26th and Sierra Leone ranks 26th of 221 countries.
New Zealand has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | New Zealand | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 7 years | 7 years | 0 years | — |
| 1980s | 7 years | 7 years | 0 years | — |
| 1990s | 7 years | 6.9 years | 0.1 years | New Zealand |
| 2000s | 7 years | 6 years | 1 years | New Zealand |
| 2010s | 7 years | 6.7 years | 0.3 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 Sierra Leone?
- New Zealand, at 7 years against 7 years in Sierra Leone as of 2025.
- What is the difference in theoretical duration of secondary education between New Zealand and Sierra Leone?
- 0 years, with New Zealand ahead.
- How many years of comparable data are there for New Zealand and Sierra Leone?
- 56 years are reported by both, from 1970 to 2025.
- How do New Zealand and Sierra Leone rank globally for theoretical duration of secondary education?
- New Zealand ranks 26th and Sierra Leone ranks 26th of 221 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