Cook Islands vs Iran: Theoretical duration of upper secondary education (years)
Cook Islands
3 years
in 2025
Iran
3 years
in 2025
Cook Islands rank
52nd
Iran rank
52nd
Theoretical duration of upper secondary education (years) over time
- Cook Islands
- Iran
How they compare
Cook Islands currently reports 3 years against 3 years in Iran, a difference of 0 years.
Across all 56 years both countries report, Iran has been ahead every year.
Cook Islands ranks 52nd and Iran ranks 52nd of 221 countries.
Iran has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | Cook Islands | Iran | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 3 years | 3.2 years | 0.2 years | Iran |
| 1980s | 3 years | 4 years | 1 years | Iran |
| 1990s | 3.2 years | 4 years | 0.8 years | Iran |
| 2000s | 3 years | 4 years | 1 years | Iran |
| 2010s | 3 years | 3.6 years | 0.6 years | Iran |
| 2020s | 3 years | 3 years | 0 years | — |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher theoretical duration of upper secondary education, Cook Islands or Iran?
- Cook Islands, at 3 years against 3 years in Iran as of 2025.
- What is the difference in theoretical duration of upper secondary education between Cook Islands and Iran?
- 0 years, with Cook Islands ahead.
- How many years of comparable data are there for Cook Islands and Iran?
- 56 years are reported by both, from 1970 to 2025.
- How do Cook Islands and Iran rank globally for theoretical duration of upper secondary education?
- Cook Islands ranks 52nd and Iran ranks 52nd of 221 countries.
- Where does this data come from?
- UNESCO Institute for Statistics, published as Theoretical duration of upper 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