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

31 years are reported by both, from 1870 to 2020.

Where does this data come from?

Barro and Lee (2015); Lee and Lee (2016) – with major processing by Our World in Data, published as Average years of schooling. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Iran, Islamic Republic of vs Jamaica: Average years of schooling

Iran, Islamic Republic of

9.8 years

in 2020

Jamaica

10.1 years

in 2020

Iran, Islamic Republic of rank

52nd

Jamaica rank

49th

Average years of schooling over time

Iran, Islamic Republic of
Jamaica

How they compare

Jamaica currently reports 10.1 years against 9.8 years in Iran, Islamic Republic of, a difference of 0.3 years.

Across all 31 years both countries report, Jamaica has been ahead every year.

Iran, Islamic Republic of ranks 52nd and Jamaica ranks 49th of 111 countries.

Jamaica has averaged higher in every one of the 16 decades both report.

Head to head by decade

Decade	Iran, Islamic Republic of	Jamaica	Difference	Ahead
1870s	0.01 years	0.715 years	0.705 years	Jamaica
1880s	0.01 years	1.01 years	1 years	Jamaica
1890s	0.01 years	1.56 years	1.55 years	Jamaica
1900s	0.025 years	2.12 years	2.1 years	Jamaica
1910s	0.12 years	2.54 years	2.42 years	Jamaica
1920s	0.235 years	2.81 years	2.58 years	Jamaica
1930s	0.285 years	3.08 years	2.79 years	Jamaica
1940s	0.445 years	3.43 years	2.98 years	Jamaica
1950s	0.66 years	3.69 years	3.03 years	Jamaica
1960s	1.25 years	4.21 years	2.96 years	Jamaica
1970s	2.52 years	5.25 years	2.73 years	Jamaica
1980s	4.25 years	6.56 years	2.31 years	Jamaica
1990s	6.09 years	8.02 years	1.93 years	Jamaica
2000s	8.07 years	9.84 years	1.77 years	Jamaica
2010s	9.26 years	10.07 years	0.81 years	Jamaica
2020s	9.8 years	10.1 years	0.3 years	Jamaica

Averages of every year both report within each decade.

Frequently asked questions

Which has higher average years of schooling, Iran, Islamic Republic of or Jamaica?: Jamaica, at 10.1 years against 9.8 years in Iran, Islamic Republic of as of 2020.
What is the difference in average years of schooling between Iran, Islamic Republic of and Jamaica?: 0.3 years, with Jamaica ahead.
How many years of comparable data are there for Iran, Islamic Republic of and Jamaica?: 31 years are reported by both, from 1870 to 2020.
How do Iran, Islamic Republic of and Jamaica rank globally for average years of schooling?: Iran, Islamic Republic of ranks 52nd and Jamaica ranks 49th of 111 countries.
Where does this data come from?: Barro and Lee (2015); Lee and Lee (2016) – with major processing by Our World in Data, published as Average years of schooling. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Iran, Islamic Republic of vs Jamaica: Average years of schooling. Statizoid, drawing on Barro and Lee (2015); Lee and Lee (2016) – with major processing by Our World in Data. Retrieved 03 September 2026, from https://education.statizoid.com/compare/mean-years-of-schooling-long-run/iran-islamic-rep/jamaica/

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About this data

Indicator: Average years of schooling
Unit: years
Source: Barro and Lee (2015); Lee and Lee (2016) – with major processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 111 places, 3,441 data points, 1870–2020
Last refreshed: 28 August 2026

Average years of formal education for individuals aged 15-64.