Theoretical duration of lower secondary education in Iran
Iran: Theoretical duration of lower secondary education was 2 years in 2020. ▼ Falling
Latest (2020)
2 years
Change on year
down 33.3%
World rank
188th
of 209 countries
All-time high
3 years
in 1970
All-time low
2 years
in 2013
Years of data
51
1970–2020
Theoretical duration of lower secondary education in Iran, 1970–2020
Source: UNESCO Institute for Statistics. Measured in years.
Analysis
In 2020, theoretical duration of lower secondary education in Iran stood at 2 years. That is the lowest value across all 51 years on record.
That represents a change of down 33.3% on the previous year and down 33.3% over ten years.
Over the whole period, theoretical duration of lower secondary education in Iran peaked at 3 years in 1970 and was at its lowest, 2 years, in 2013.
Iran ranks 188th of 209 countries on this measure, in the bottom quarter.
The long-run direction has been consistently falling across the 51 years of available data.
Theoretical duration of lower secondary education in Iran, year by year
| Year | years | Change |
|---|---|---|
| 1970 | 3 years | — |
| 1971 | 3 years | +0.0% |
| 1972 | 3 years | +0.0% |
| 1973 | 3 years | +0.0% |
| 1974 | 3 years | +0.0% |
| 1975 | 3 years | +0.0% |
| 1976 | 3 years | +0.0% |
| 1977 | 3 years | +0.0% |
| 1978 | 3 years | +0.0% |
| 1979 | 3 years | +0.0% |
| 1980 | 3 years | +0.0% |
| 1981 | 3 years | +0.0% |
| 1982 | 3 years | +0.0% |
| 1983 | 3 years | +0.0% |
| 1984 | 3 years | +0.0% |
| 1985 | 3 years | +0.0% |
| 1986 | 3 years | +0.0% |
| 1987 | 3 years | +0.0% |
| 1988 | 3 years | +0.0% |
| 1989 | 3 years | +0.0% |
| 1990 | 3 years | +0.0% |
| 1991 | 3 years | +0.0% |
| 1992 | 3 years | +0.0% |
| 1993 | 3 years | +0.0% |
| 1994 | 3 years | +0.0% |
| 1995 | 3 years | +0.0% |
| 1996 | 3 years | +0.0% |
| 1997 | 3 years | +0.0% |
| 1998 | 3 years | +0.0% |
| 1999 | 3 years | +0.0% |
| 2000 | 3 years | +0.0% |
| 2001 | 3 years | +0.0% |
| 2002 | 3 years | +0.0% |
| 2003 | 3 years | +0.0% |
| 2004 | 3 years | +0.0% |
| 2005 | 3 years | +0.0% |
| 2006 | 3 years | +0.0% |
| 2007 | 3 years | +0.0% |
| 2008 | 3 years | +0.0% |
| 2009 | 3 years | +0.0% |
| 2010 | 3 years | +0.0% |
| 2011 | 3 years | +0.0% |
| 2012 | 3 years | +0.0% |
| 2013 | 2 years | -33.3% |
| 2014 | 2 years | +0.0% |
| 2015 | 2 years | +0.0% |
| 2016 | 3 years | +50.0% |
| 2017 | 3 years | +0.0% |
| 2018 | 3 years | +0.0% |
| 2019 | 3 years | +0.0% |
| 2020 | 2 years | -33.3% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 3 years | 3 years | 3 years | 10 |
| 1980s | 3 years | 3 years | 3 years | 10 |
| 1990s | 3 years | 3 years | 3 years | 10 |
| 2000s | 3 years | 3 years | 3 years | 10 |
| 2010s | 2.7 years | 2 years | 3 years | 10 |
| 2020s | 2 years | 2 years | 2 years | 1 |
Countries ranked near Iran
- 188 Aruba 2 years compare
- 188 Belgium 2 years compare
- 188 Bolivia 2 years compare
- 188 Brunei 2 years compare
- 188 Chile 2 years compare
- 188 Democratic Republic of Congo 2 years compare
- 188 Curacao 2 years compare
- 188 Dominican Republic 2 years compare
- 188 Gibraltar 2 years compare
- 188 Kenya 2 years compare
- 188 Micronesia (country) 2 years compare
- 188 Palau 2 years compare
- 188 Papua New Guinea 2 years compare
- 188 Samoa 2 years compare
- 188 Singapore 2 years compare
- 188 Sint Maarten (Dutch part) 2 years compare
- 188 Somalia 2 years compare
- 188 South Africa 2 years compare
- 188 South Sudan 2 years compare
- 188 Zambia 2 years compare
- 188 Zimbabwe 2 years 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 lower secondary education in Iran?
- Theoretical duration of lower secondary education in Iran was 2 years in 2020, according to UNESCO Institute for Statistics.
- What is the highest theoretical duration of lower secondary education recorded in Iran?
- The highest recorded value was 3 years in 1970.
- What is the lowest theoretical duration of lower secondary education recorded in Iran?
- The lowest recorded value was 2 years in 2013.
- How does Iran rank for theoretical duration of lower secondary education?
- Iran ranks 188th out of 209 countries with data for 2020.
- Is theoretical duration of lower secondary education rising or falling in Iran?
- Over the last ten years it is down 33.3%. The long-run trend across the full record is falling.
- Where does this Iran data come from?
- The figures come from UNESCO Institute for Statistics, published as part of Theoretical duration of lower secondary education (years). Statizoid updates them automatically from the source API.
Download this data
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About this data
Number of grades (years) in lower secondary education.