What is the difference in barro-lee: average years of primary schooling, age 55-59, total between Congo and Iran, Islamic Republic of?

0.11, with Iran, Islamic Republic of ahead.

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

11 years are reported by both, from 1960 to 2010.

Where does this data come from?

Robert J. Barro and Jong-Wha Lee: http://www.barrolee.com/, published as Barro-Lee: Average years of primary schooling, age 55-59, total. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Congo vs Iran, Islamic Republic of: Barro-Lee: Average years of primary schooling, age 55-59, total

Congo

3.72

in 2010

Iran, Islamic Republic of

3.83

in 2010

Congo rank

92nd

Iran, Islamic Republic of rank

89th

Barro-Lee: Average years of primary schooling, age 55-59, total over time

Congo
Iran, Islamic Republic of

How they compare

Iran, Islamic Republic of currently reports 3.83 against 3.72 in Congo, a difference of 0.11.

The two have swapped places 1 time across 11 shared years of data; in 1960 it was Congo ahead.

Congo ranks 92nd and Iran, Islamic Republic of ranks 89th of 144 countries.

Across the 6 decades both report, Congo averaged higher in 1 and Iran, Islamic Republic of in 5.

Head to head by decade

Decade	Congo	Iran, Islamic Republic of	Difference	Ahead
1960s	0.34	0.195	0.145	Congo
1970s	0.355	0.43	0.075	Iran, Islamic Republic of
1980s	0.415	0.76	0.345	Iran, Islamic Republic of
1990s	1.04	1.37	0.33	Iran, Islamic Republic of
2000s	2.11	2.7	0.585	Iran, Islamic Republic of
2010s	3.72	3.83	0.11	Iran, Islamic Republic of

Averages of every year both report within each decade.

Frequently asked questions

Which has higher barro-lee: average years of primary schooling, age 55-59, total, Congo or Iran, Islamic Republic of?: Iran, Islamic Republic of, at 3.83 against 3.72 in Congo as of 2010.
What is the difference in barro-lee: average years of primary schooling, age 55-59, total between Congo and Iran, Islamic Republic of?: 0.11, with Iran, Islamic Republic of ahead.
How many years of comparable data are there for Congo and Iran, Islamic Republic of?: 11 years are reported by both, from 1960 to 2010.
How do Congo and Iran, Islamic Republic of rank globally for barro-lee: average years of primary schooling, age 55-59, total?: Congo ranks 92nd and Iran, Islamic Republic of ranks 89th of 144 countries.
Where does this data come from?: Robert J. Barro and Jong-Wha Lee: http://www.barrolee.com/, published as Barro-Lee: Average years of primary schooling, age 55-59, total. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Congo vs Iran, Islamic Republic of: Barro-Lee: Average years of primary schooling, age 55-59, total. Statizoid, drawing on Robert J. Barro and Jong-Wha Lee: http://www.barrolee.com/. Retrieved 02 September 2026, from https://education.statizoid.com/compare/barro-lee-average-years-of-primary-schooling-age-55-59-total/congo-rep/iran-islamic-rep/

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<a href="https://education.statizoid.com/compare/barro-lee-average-years-of-primary-schooling-age-55-59-total/congo-rep/iran-islamic-rep/">Congo vs Iran, Islamic Republic of: Barro-Lee: Average years of primary schooling, age 55-59, total</a> — Statizoid

About this data

Indicator: Barro-Lee: Average years of primary schooling, age 55-59, total
Source: Robert J. Barro and Jong-Wha Lee: http://www.barrolee.com/
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 144 places, 1,584 data points, 1960–2010
Last refreshed: 21 August 2026

Average years of primary schooling, 55-59, total is the average years of primary education completed among people age 55-59.