Theoretical duration of upper secondary education in years in Iran
Iran: Theoretical duration of upper secondary education in years was 3 in 2025. ▬ Flat
Latest (2025)
3
Change on year
unchanged
World rank
25th
of 73 countries
All-time high
4
in 1978
All-time low
3
in 1970
Years of data
56
1970–2025
Theoretical duration of upper secondary education in years in Iran, 1970–2025
Source: UNICEF.
Analysis
The most recent figure for theoretical duration of upper secondary education in years in Iran is 3, measured in 2025. That is the lowest value across all 56 years on record.
That represents a change of down 25.0% over ten years.
Over the whole period, theoretical duration of upper secondary education in years in Iran peaked at 4 in 1978 and was at its lowest, 3, in 1970.
That places Iran 25th out of 73 countries with data for 2025, putting it in the middle of the range.
Theoretical duration of upper secondary education in years in Iran, year by year
| Year | Value | Change |
|---|---|---|
| 1970 | 3 | — |
| 1971 | 3 | +0.0% |
| 1972 | 3 | +0.0% |
| 1973 | 3 | +0.0% |
| 1974 | 3 | +0.0% |
| 1975 | 3 | +0.0% |
| 1976 | 3 | +0.0% |
| 1977 | 3 | +0.0% |
| 1978 | 4 | +33.3% |
| 1979 | 4 | +0.0% |
| 1980 | 4 | +0.0% |
| 1981 | 4 | +0.0% |
| 1982 | 4 | +0.0% |
| 1983 | 4 | +0.0% |
| 1984 | 4 | +0.0% |
| 1985 | 4 | +0.0% |
| 1986 | 4 | +0.0% |
| 1987 | 4 | +0.0% |
| 1988 | 4 | +0.0% |
| 1989 | 4 | +0.0% |
| 1990 | 4 | +0.0% |
| 1991 | 4 | +0.0% |
| 1992 | 4 | +0.0% |
| 1993 | 4 | +0.0% |
| 1994 | 4 | +0.0% |
| 1995 | 4 | +0.0% |
| 1996 | 4 | +0.0% |
| 1997 | 4 | +0.0% |
| 1998 | 4 | +0.0% |
| 1999 | 4 | +0.0% |
| 2000 | 4 | +0.0% |
| 2001 | 4 | +0.0% |
| 2002 | 4 | +0.0% |
| 2003 | 4 | +0.0% |
| 2004 | 4 | +0.0% |
| 2005 | 4 | +0.0% |
| 2006 | 4 | +0.0% |
| 2007 | 4 | +0.0% |
| 2008 | 4 | +0.0% |
| 2009 | 4 | +0.0% |
| 2010 | 4 | +0.0% |
| 2011 | 4 | +0.0% |
| 2012 | 4 | +0.0% |
| 2013 | 4 | +0.0% |
| 2014 | 4 | +0.0% |
| 2015 | 4 | +0.0% |
| 2016 | 3 | -25.0% |
| 2017 | 3 | +0.0% |
| 2018 | 3 | +0.0% |
| 2019 | 3 | +0.0% |
| 2020 | 3 | +0.0% |
| 2021 | 3 | +0.0% |
| 2022 | 3 | +0.0% |
| 2023 | 3 | +0.0% |
| 2024 | 3 | +0.0% |
| 2025 | 3 | +0.0% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 3.2 | 3 | 4 | 10 |
| 1980s | 4 | 4 | 4 | 10 |
| 1990s | 4 | 4 | 4 | 10 |
| 2000s | 4 | 4 | 4 | 10 |
| 2010s | 3.6 | 3 | 4 | 10 |
| 2020s | 3 | 3 | 3 | 6 |
Countries ranked near Iran
- 25 Spain 3 compare
- 25 Moldova 3 compare
- 25 Sweden 3 compare
- 25 France 3 compare
- 25 Algeria 3 compare
- 25 Saudi Arabia 3 compare
- 25 Cyprus 3 compare
- 25 Greece 3 compare
- 25 Germany 3 compare
- 25 Lebanon 3 compare
- 25 Qatar 3 compare
- 25 Yemen 3 compare
- 25 Estonia 3 compare
- 25 Netherlands 3 compare
- 25 Armenia 3 compare
- 25 Syria 3 compare
- 25 Georgia 3 compare
- 25 Morocco 3 compare
- 25 Denmark 3 compare
- 25 Libya 3 compare
- 25 Bahrain 3 compare
- 25 Latvia 3 compare
- 25 Finland 3 compare
- 25 Palestine 3 compare
- 25 Sudan 3 compare
- 25 Norway 3 compare
- 25 Egypt 3 compare
- 25 Iraq 3 compare
- 25 Monaco 3 compare
- 25 Djibouti 3 compare
- 25 Albania 3 compare
- 25 Liechtenstein 3 compare
- 25 Portugal 3 compare
- 25 Kuwait 3 compare
More education data for Iran
- Theoretical duration of upper secondary education (years), annual 0 % change on previous year (2025)
- Theoretical duration of secondary education (years), annual growth 0 % change on previous year (2025)
- Start of the academic school year (tertiary education), gaps filled 2,021 tertiary education (2022)
- Start of the academic school year (tertiary education), annual growth 0.0495 % change on previous year (2022)
- Primary education, teachers, gaps filled 372,396 (2023)
- Duration of pre primary education, annual growth rate 0 % change on previous year (2025)
- Duration of pre primary education 1 (2025)
- Official entrance age to pre primary education 5 (2025)
- Population ages 15-64 69.4% (2025)
- Population ages 0-14 22.0% (2025)
Frequently asked questions
- What is theoretical duration of upper secondary education in years in Iran?
- Theoretical duration of upper secondary education in years in Iran was 3 in 2025, according to UNICEF.
- What is the highest theoretical duration of upper secondary education in years recorded in Iran?
- The highest recorded value was 4 in 1978.
- What is the lowest theoretical duration of upper secondary education in years recorded in Iran?
- The lowest recorded value was 3 in 1970.
- How does Iran rank for theoretical duration of upper secondary education in years?
- Iran ranks 25th out of 73 countries with data for 2025.
- Is theoretical duration of upper secondary education in years rising or falling in Iran?
- Over the last ten years it is down 25.0%. The long-run trend across the full record is flat.
- Where does this Iran data come from?
- The figures come from UNICEF, published as part of Theoretical duration of upper secondary education in years. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 56 observations, free to reuse under UNICEF Terms of Use (attribution required).