Eritrea vs Iran: Theoretical duration of lower secondary education (years)
Eritrea
3 years
in 2025
Iran
3 years
in 2025
Eritrea rank
91st
Iran rank
91st
Theoretical duration of lower secondary education (years) over time
- Eritrea
- Iran
How they compare
Eritrea 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.
Eritrea ranks 91st and Iran ranks 91st of 221 countries.
Across the 6 decades both report, Eritrea averaged higher in 1 and Iran in 4.
Head to head by decade
| Decade | Eritrea | Iran | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 2 years | 3 years | 1 years | Iran |
| 1980s | 2 years | 3 years | 1 years | Iran |
| 1990s | 2 years | 3 years | 1 years | Iran |
| 2000s | 2.6 years | 3 years | 0.4 years | Iran |
| 2010s | 3 years | 2.7 years | 0.3 years | Eritrea |
| 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, Eritrea or Iran?
- Eritrea, at 3 years against 3 years in Iran as of 2025.
- What is the difference in theoretical duration of lower secondary education between Eritrea and Iran?
- 0 years, with Eritrea ahead.
- How many years of comparable data are there for Eritrea and Iran?
- 56 years are reported by both, from 1970 to 2025.
- How do Eritrea and Iran rank globally for theoretical duration of lower secondary education?
- Eritrea 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