How many years of comparable data are there for Sierra Leone and Sudan?

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 total schooling, age 25+, total. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Sierra Leone vs Sudan: Barro-Lee: Average years of total schooling, age 25+, total

Sierra Leone

3.06

in 2010

Sudan

3.13

in 2010

Sierra Leone rank

137th

Sudan rank

136th

Barro-Lee: Average years of total schooling, age 25+, total over time

Sierra Leone
Sudan

How they compare

Sudan currently reports 3.13 against 3.06 in Sierra Leone, a difference of 0.07.

The two have swapped places 3 times across 11 shared years of data; in 1960 it was Sierra Leone ahead.

Sierra Leone ranks 137th and Sudan ranks 136th of 144 countries.

Across the 6 decades both report, Sierra Leone averaged higher in 4 and Sudan in 2.

Head to head by decade

Decade	Sierra Leone	Sudan	Difference	Ahead
1960s	0.51	0.435	0.075	Sierra Leone
1970s	0.655	0.645	0.01	Sierra Leone
1980s	1.1	0.995	0.11	Sierra Leone
1990s	1.77	1.73	0.035	Sierra Leone
2000s	2.49	2.69	0.195	Sudan
2010s	3.06	3.13	0.07	Sudan

Averages of every year both report within each decade.

Frequently asked questions

Which has higher barro-lee: average years of total schooling, age 25+, total, Sierra Leone or Sudan?: Sudan, at 3.13 against 3.06 in Sierra Leone as of 2010.
What is the difference in barro-lee: average years of total schooling, age 25+, total between Sierra Leone and Sudan?: 0.07, with Sudan ahead.
How many years of comparable data are there for Sierra Leone and Sudan?: 11 years are reported by both, from 1960 to 2010.
How do Sierra Leone and Sudan rank globally for barro-lee: average years of total schooling, age 25+, total?: Sierra Leone ranks 137th and Sudan ranks 136th 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 total schooling, age 25+, total. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Sierra Leone vs Sudan: Barro-Lee: Average years of total schooling, age 25+, total. Statizoid, drawing on Robert J. Barro and Jong-Wha Lee: http://www.barrolee.com/. Retrieved 04 September 2026, from https://education.statizoid.com/compare/barro-lee-average-years-of-total-schooling-age-25-total/sierra-leone/sudan/

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<a href="https://education.statizoid.com/compare/barro-lee-average-years-of-total-schooling-age-25-total/sierra-leone/sudan/">Sierra Leone vs Sudan: Barro-Lee: Average years of total schooling, age 25+, total</a> — Statizoid

About this data

Indicator: Barro-Lee: Average years of total schooling, age 25+, 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 total schooling, 25+, total is the average years of education completed among people over age 25.