Iran, Islamic Republic of vs Sao Tome and Principe: Official entrance age to upper secondary education
Iran, Islamic Republic of
15 years
in 2025
Sao Tome and Principe
15 years
in 2025
Iran, Islamic Republic of rank
65th
Sao Tome and Principe rank
65th
Official entrance age to upper secondary education over time
- Iran, Islamic Republic of
- Sao Tome and Principe
How they compare
Iran, Islamic Republic of currently reports 15 years against 15 years in Sao Tome and Principe, a difference of 0 years.
Across all 56 years both countries report, Sao Tome and Principe has been ahead every year.
Iran, Islamic Republic of ranks 65th and Sao Tome and Principe ranks 65th of 221 countries.
Sao Tome and Principe has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | Iran, Islamic Republic of | Sao Tome and Principe | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 14.2 years | 15 years | 0.8 years | Sao Tome and Principe |
| 1980s | 14 years | 15.2 years | 1.2 years | Sao Tome and Principe |
| 1990s | 14 years | 15.9 years | 1.9 years | Sao Tome and Principe |
| 2000s | 14 years | 15 years | 1 years | Sao Tome and Principe |
| 2010s | 14.4 years | 15 years | 0.6 years | Sao Tome and Principe |
| 2020s | 15 years | 15 years | 0 years | — |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher official entrance age to upper secondary education, Iran, Islamic Republic of or Sao Tome and Principe?
- Iran, Islamic Republic of, at 15 years against 15 years in Sao Tome and Principe as of 2025.
- What is the difference in official entrance age to upper secondary education between Iran, Islamic Republic of and Sao Tome and Principe?
- 0 years, with Iran, Islamic Republic of ahead.
- How many years of comparable data are there for Iran, Islamic Republic of and Sao Tome and Principe?
- 56 years are reported by both, from 1970 to 2025.
- How do Iran, Islamic Republic of and Sao Tome and Principe rank globally for official entrance age to upper secondary education?
- Iran, Islamic Republic of ranks 65th and Sao Tome and Principe ranks 65th of 221 countries.
- Where does this data come from?
- UNESCO Institute for Statistics, published as Official entrance age to upper 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