Costa Rica vs Iran: Theoretical duration of lower secondary education (years)
Costa Rica
3 years
in 2025
Iran
3 years
in 2025
Costa Rica rank
91st
Iran rank
91st
Theoretical duration of lower secondary education (years) over time
- Costa Rica
- Iran
How they compare
Costa Rica currently reports 3 years against 3 years in Iran, a difference of 0 years.
The two have swapped places 2 times across 56 shared years of data; in 1970 it was Iran ahead.
Costa Rica ranks 91st and Iran ranks 91st of 221 countries.
Costa Rica has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | Costa Rica | Iran | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 3 years | 3 years | 0 years | — |
| 1980s | 3 years | 3 years | 0 years | — |
| 1990s | 3 years | 3 years | 0 years | — |
| 2000s | 3 years | 3 years | 0 years | — |
| 2010s | 3 years | 2.7 years | 0.3 years | Costa Rica |
| 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 lower secondary education, Costa Rica or Iran?
- Costa Rica, at 3 years against 3 years in Iran as of 2025.
- What is the difference in theoretical duration of lower secondary education between Costa Rica and Iran?
- 0 years, with Costa Rica ahead.
- How many years of comparable data are there for Costa Rica and Iran?
- 56 years are reported by both, from 1970 to 2025.
- How do Costa Rica and Iran rank globally for theoretical duration of lower secondary education?
- Costa Rica ranks 91st and Iran ranks 91st 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