Cook Islands vs Serbia: Theoretical duration of lower secondary education (years)
Cook Islands
4 years
in 2025
Serbia
4 years
in 2025
Cook Islands rank
18th
Serbia rank
18th
Theoretical duration of lower secondary education (years) over time
- Cook Islands
- Serbia
How they compare
Cook Islands currently reports 4 years against 4 years in Serbia, a difference of 0 years.
Across all 56 years both countries report, Serbia has been ahead every year.
Cook Islands ranks 18th and Serbia ranks 18th of 221 countries.
Serbia has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | Cook Islands | Serbia | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 3 years | 4 years | 1 years | Serbia |
| 1980s | 3 years | 4 years | 1 years | Serbia |
| 1990s | 3.2 years | 4 years | 0.8 years | Serbia |
| 2000s | 4 years | 4 years | 0 years | — |
| 2010s | 4 years | 4 years | 0 years | — |
| 2020s | 4 years | 4 years | 0 years | — |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher theoretical duration of lower secondary education, Cook Islands or Serbia?
- Cook Islands, at 4 years against 4 years in Serbia as of 2025.
- What is the difference in theoretical duration of lower secondary education between Cook Islands and Serbia?
- 0 years, with Cook Islands ahead.
- How many years of comparable data are there for Cook Islands and Serbia?
- 56 years are reported by both, from 1970 to 2025.
- How do Cook Islands and Serbia rank globally for theoretical duration of lower secondary education?
- Cook Islands ranks 18th and Serbia ranks 18th of 221 countries.
- Where does this data come from?
- UNESCO Institute for Statistics, published as Theoretical duration of lower 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