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 75+, 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 75+, total

Sierra Leone

0.65

in 2010

Sudan

0.64

in 2010

Sierra Leone rank

129th

Sudan rank

132nd

Barro-Lee: Average years of total schooling, age 75+, total over time

Sierra Leone
Sudan

How they compare

Sierra Leone currently reports 0.65 against 0.64 in Sudan, a difference of 0.01.

The two have swapped places 2 times across 11 shared years of data; in 1960 it was Sierra Leone ahead.

Sierra Leone ranks 129th and Sudan ranks 132nd of 144 countries.

Across the 6 decades both report, Sierra Leone averaged higher in 5 and Sudan in 1.

Head to head by decade

Decade	Sierra Leone	Sudan	Difference	Ahead
1960s	0.35	0.09	0.26	Sierra Leone
1970s	0.35	0.27	0.08	Sierra Leone
1980s	0.37	0.395	0.025	Sudan
1990s	0.53	0.445	0.085	Sierra Leone
2000s	0.58	0.53	0.05	Sierra Leone
2010s	0.65	0.64	0.01	Sierra Leone

Averages of every year both report within each decade.

Frequently asked questions

Which has higher barro-lee: average years of total schooling, age 75+, total, Sierra Leone or Sudan?: Sierra Leone, at 0.65 against 0.64 in Sudan as of 2010.
What is the difference in barro-lee: average years of total schooling, age 75+, total between Sierra Leone and Sudan?: 0.01, with Sierra Leone 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 75+, total?: Sierra Leone ranks 129th and Sudan ranks 132nd 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 75+, 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 75+, total. Statizoid, drawing on Robert J. Barro and Jong-Wha Lee: http://www.barrolee.com/. Retrieved 21 August 2026, from https://reference.statizoid.com/compare/barro-lee-average-years-of-total-schooling-age-75-total/sierra-leone/sudan/

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<a href="https://reference.statizoid.com/compare/barro-lee-average-years-of-total-schooling-age-75-total/sierra-leone/sudan/">Sierra Leone vs Sudan: Barro-Lee: Average years of total schooling, age 75+, total</a> — Statizoid

About this data

Indicator: Barro-Lee: Average years of total schooling, age 75+, 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: 07 August 2026

Average years of total schooling, 75+, total is the average years of education completed among people over age 75.