What is the difference in theoretical duration of upper secondary education between Bangladesh and Iran, Islamic Republic of?

0 years, with Bangladesh ahead.

How many years of comparable data are there for Bangladesh and Iran, Islamic Republic of?

51 years are reported by both, from 1970 to 2020.

Where does this data come from?

UNESCO Institute for Statistics, published as Theoretical duration of upper secondary education (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Bangladesh vs Iran, Islamic Republic of: Theoretical duration of upper secondary education

Bangladesh

4 years

in 2020

Iran, Islamic Republic of

4 years

in 2020

Bangladesh rank

5th

Iran, Islamic Republic of rank

5th

Theoretical duration of upper secondary education over time

Bangladesh
Iran, Islamic Republic of

How they compare

Bangladesh currently reports 4 years against 4 years in Iran, Islamic Republic of, a difference of 0 years.

The two have swapped places 2 times across 51 shared years of data; in 1970 it was Iran, Islamic Republic of ahead.

Bangladesh ranks 5th and Iran, Islamic Republic of ranks 5th of 209 countries.

Across the 6 decades both report, Bangladesh averaged higher in 1 and Iran, Islamic Republic of in 3.

Head to head by decade

Decade	Bangladesh	Iran, Islamic Republic of	Difference	Ahead
1970s	2 years	3.2 years	1.2 years	Iran, Islamic Republic of
1980s	2 years	4 years	2 years	Iran, Islamic Republic of
1990s	2.4 years	4 years	1.6 years	Iran, Islamic Republic of
2000s	4 years	4 years	0 years	—
2010s	4 years	3.6 years	0.4 years	Bangladesh
2020s	4 years	4 years	0 years	—

Averages of every year both report within each decade.

Frequently asked questions

Which has higher theoretical duration of upper secondary education, Bangladesh or Iran, Islamic Republic of?: Bangladesh, at 4 years against 4 years in Iran, Islamic Republic of as of 2020.
What is the difference in theoretical duration of upper secondary education between Bangladesh and Iran, Islamic Republic of?: 0 years, with Bangladesh ahead.
How many years of comparable data are there for Bangladesh and Iran, Islamic Republic of?: 51 years are reported by both, from 1970 to 2020.
How do Bangladesh and Iran, Islamic Republic of rank globally for theoretical duration of upper secondary education?: Bangladesh ranks 5th and Iran, Islamic Republic of ranks 5th of 209 countries.
Where does this data come from?: UNESCO Institute for Statistics, published as Theoretical duration of upper secondary education (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Bangladesh vs Iran, Islamic Republic of: Theoretical duration of upper secondary education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 06 September 2026, from https://education.statizoid.com/compare/theoretical-duration-of-upper-secondary-education-years/bangladesh/iran-islamic-rep/

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About this data

Indicator: Theoretical duration of upper secondary education (years)
Unit: years
Source: UNESCO Institute for Statistics
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 209 places, 10,366 data points, 1970–2020
Last refreshed: 04 September 2026

Number of grades (years) in upper secondary education.