Statizoid

Secondary education, duration in Iran

Iran: Secondary education, duration was 6 years in 2025. ▬ Flat

Latest (2025)
6 years
Change on year
unchanged
World rank
91st
of 209 countries
All-time high
7 years
in 1978
All-time low
6 years
in 1970
Years of data
56
1970–2025

Secondary education, duration in Iran, 1970–2025

02468197019972025

Source: Data API, UN Educational, Scientific and Cultural Organization (UNESCO). Measured in years.

Analysis

In 2025, secondary education, duration in Iran stood at 6 years. That is the lowest value across all 56 years on record.

Compared with earlier readings it is unchanged over ten years.

Over the whole period, secondary education, duration in Iran peaked at 7 years in 1978 and was at its lowest, 6 years, in 1970.

That places Iran 91st out of 209 countries with data for 2025, putting it in the middle of the range.

Averages by decade

DecadeAverage LowestHighest Years
1970s 6.2 years 6 years 7 years 10
1980s 7 years 7 years 7 years 10
1990s 7 years 7 years 7 years 10
2000s 7 years 7 years 7 years 10
2010s 6.3 years 6 years 7 years 10
2020s 6 years 6 years 6 years 6

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See the full ranking of 255 places →

More education data for Iran

All data for Iran →

Frequently asked questions

What is secondary education, duration in Iran?
Secondary education, duration in Iran was 6 years in 2025, according to Data API, UN Educational, Scientific and Cultural Organization (UNESCO).
What is the highest secondary education, duration recorded in Iran?
The highest recorded value was 7 years in 1978.
What is the lowest secondary education, duration recorded in Iran?
The lowest recorded value was 6 years in 1970.
How does Iran rank for secondary education, duration?
Iran ranks 91st out of 209 countries with data for 2025.
Is secondary education, duration rising or falling in Iran?
Over the last ten years it is unchanged. The long-run trend across the full record is flat.
Where does this Iran data come from?
The figures come from Data API, UN Educational, Scientific and Cultural Organization (UNESCO), published as part of Secondary education, duration (years). Statizoid updates them automatically from the source API.

Download this data

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About this data

Indicator
Secondary education, duration (years)
Unit
years
Source
Data API, UN Educational, Scientific and Cultural Organization (UNESCO)
Licence
CC BY 4.0 (World Bank Open Data)
Coverage
255 places, 13,986 data points, 1970–2025
Last refreshed

Secondary duration refers to the number of grades (years) in secondary school.