Chad vs Iran, Islamic Republic of: Official entrance age to lower secondary education
Chad
12 years
in 2025
Iran, Islamic Republic of
12 years
in 2025
Chad rank
30th
Iran, Islamic Republic of rank
30th
Official entrance age to lower secondary education over time
- Chad
- Iran, Islamic Republic of
How they compare
Chad currently reports 12 years against 12 years in Iran, Islamic Republic of, a difference of 0 years.
The two have swapped places 2 times across 56 shared years of data; in 1970 it was Iran, Islamic Republic of ahead.
Chad ranks 30th and Iran, Islamic Republic of ranks 30th of 215 countries.
Chad has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | Chad | Iran, Islamic Republic of | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 12 years | 11.2 years | 0.8 years | Chad |
| 1980s | 12 years | 11 years | 1 years | Chad |
| 1990s | 12 years | 11 years | 1 years | Chad |
| 2000s | 12 years | 11 years | 1 years | Chad |
| 2010s | 12 years | 11.7 years | 0.3 years | Chad |
| 2020s | 12 years | 12 years | 0 years | — |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher official entrance age to lower secondary education, Chad or Iran, Islamic Republic of?
- Chad, at 12 years against 12 years in Iran, Islamic Republic of as of 2025.
- What is the difference in official entrance age to lower secondary education between Chad and Iran, Islamic Republic of?
- 0 years, with Chad ahead.
- How many years of comparable data are there for Chad and Iran, Islamic Republic of?
- 56 years are reported by both, from 1970 to 2025.
- How do Chad and Iran, Islamic Republic of rank globally for official entrance age to lower secondary education?
- Chad ranks 30th and Iran, Islamic Republic of ranks 30th of 215 countries.
- Where does this data come from?
- UNESCO Institute for Statistics, published as Official entrance age to 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