Which has higher average years of schooling, Sierra Leone or Yemen?

Yemen, at 5.56 years against 4.99 years in Sierra Leone as of 2020.

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

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.

Sierra Leone vs Yemen: Average years of schooling

Sierra Leone

4.99 years

in 2020

Yemen

5.56 years

in 2020

Sierra Leone rank

104th

Yemen rank

102nd

Average years of schooling over time

Sierra Leone
Yemen

How they compare

Yemen currently reports 5.56 years against 4.99 years in Sierra Leone, a difference of 0.57 years.

That makes Yemen's figure about 1.1 times Sierra Leone's.

The two have swapped places 1 time across 31 shared years of data; in 1870 it was Sierra Leone ahead.

Sierra Leone ranks 104th and Yemen ranks 102nd of 111 countries.

Across the 16 decades both report, Sierra Leone averaged higher in 15 and Yemen in 1.

Head to head by decade

Decade	Sierra Leone	Yemen	Difference	Ahead
1870s	0.025 years	0.01 years	0.015 years	Sierra Leone
1880s	0.035 years	0.01 years	0.025 years	Sierra Leone
1890s	0.055 years	0.01 years	0.045 years	Sierra Leone
1900s	0.09 years	0.01 years	0.08 years	Sierra Leone
1910s	0.165 years	0.01 years	0.155 years	Sierra Leone
1920s	0.215 years	0.01 years	0.205 years	Sierra Leone
1930s	0.25 years	0.02 years	0.23 years	Sierra Leone
1940s	0.335 years	0.02 years	0.315 years	Sierra Leone
1950s	0.435 years	0.03 years	0.405 years	Sierra Leone
1960s	0.595 years	0.05 years	0.545 years	Sierra Leone
1970s	1 years	0.075 years	0.93 years	Sierra Leone
1980s	1.62 years	0.445 years	1.18 years	Sierra Leone
1990s	2.36 years	1.51 years	0.85 years	Sierra Leone
2000s	3.13 years	2.79 years	0.345 years	Sierra Leone
2010s	4.26 years	4.24 years	0.015 years	Sierra Leone
2020s	4.99 years	5.56 years	0.57 years	Yemen

Averages of every year both report within each decade.

Frequently asked questions

Which has higher average years of schooling, Sierra Leone or Yemen?: Yemen, at 5.56 years against 4.99 years in Sierra Leone as of 2020.
What is the difference in average years of schooling between Sierra Leone and Yemen?: 0.57 years, with Yemen ahead.
How many years of comparable data are there for Sierra Leone and Yemen?: 31 years are reported by both, from 1870 to 2020.
How do Sierra Leone and Yemen rank globally for average years of schooling?: Sierra Leone ranks 104th and Yemen ranks 102nd 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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Sierra Leone vs Yemen: 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/sierra-leone/yemen-rep/

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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.