Iran, Islamic Republic of vs Tonga: Official entrance age to lower secondary education
Iran, Islamic Republic of
12 years
in 2025
Tonga
12 years
in 2025
Iran, Islamic Republic of rank
30th
Tonga rank
30th
Official entrance age to lower secondary education over time
- Iran, Islamic Republic of
- Tonga
How they compare
Iran, Islamic Republic of currently reports 12 years against 12 years in Tonga, a difference of 0 years.
Across all 56 years both countries report, Tonga has been ahead every year.
Iran, Islamic Republic of ranks 30th and Tonga ranks 30th of 215 countries.
Tonga has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | Iran, Islamic Republic of | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 11.2 years | 12 years | 0.8 years | Tonga |
| 1980s | 11 years | 11.4 years | 0.4 years | Tonga |
| 1990s | 11 years | 11 years | 0 years | — |
| 2000s | 11 years | 11 years | 0 years | — |
| 2010s | 11.7 years | 11.8 years | 0.1 years | Tonga |
| 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, Iran, Islamic Republic of or Tonga?
- Iran, Islamic Republic of, at 12 years against 12 years in Tonga as of 2025.
- What is the difference in official entrance age to lower secondary education between Iran, Islamic Republic of and Tonga?
- 0 years, with Iran, Islamic Republic of ahead.
- How many years of comparable data are there for Iran, Islamic Republic of and Tonga?
- 56 years are reported by both, from 1970 to 2025.
- How do Iran, Islamic Republic of and Tonga rank globally for official entrance age to lower secondary education?
- Iran, Islamic Republic of ranks 30th and Tonga 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