Iran vs Tanzania: Duration of pre-primary education
Iran
1 years
in 2025
Tanzania
1 years
in 2025
Iran rank
211th
Tanzania rank
211th
Duration of pre-primary education over time
- Iran
- Tanzania
How they compare
Iran currently reports 1 years against 1 years in Tanzania, a difference of 0 years.
Across all 56 years both countries report, Tanzania has been ahead every year.
Iran ranks 211th and Tanzania ranks 211th of 223 countries.
Tanzania has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | Iran | Tanzania | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 1 years | 2 years | 1 years | Tanzania |
| 1980s | 1 years | 2 years | 1 years | Tanzania |
| 1990s | 1 years | 2 years | 1 years | Tanzania |
| 2000s | 1 years | 2 years | 1 years | Tanzania |
| 2010s | 1 years | 2 years | 1 years | Tanzania |
| 2020s | 1 years | 1 years | 0 years | — |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher duration of pre-primary education, Iran or Tanzania?
- Iran, at 1 years against 1 years in Tanzania as of 2025.
- What is the difference in duration of pre-primary education between Iran and Tanzania?
- 0 years, with Iran ahead.
- How many years of comparable data are there for Iran and Tanzania?
- 56 years are reported by both, from 1970 to 2025.
- How do Iran and Tanzania rank globally for duration of pre-primary education?
- Iran ranks 211th and Tanzania ranks 211th of 223 countries.
- Where does this data come from?
- UNESCO Institute for Statistics (2026) – with minor processing by Our World in Data, published as Duration of pre-primary education. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Average number of years that a child is expected to spend in pre-primary education, defined by country's official educational regulations or laws.