How many years of comparable data are there for Gambia and Zambia?

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

Gambia vs Zambia: Barro-Lee: Average years of secondary schooling, age 25+, total

Gambia

1.13

in 2010

Zambia

1.23

in 2010

Gambia rank

123rd

Zambia rank

120th

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

Gambia
Zambia

How they compare

Zambia currently reports 1.23 against 1.13 in Gambia, a difference of 0.1.

That makes Zambia's figure about 1.1 times Gambia's.

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

Gambia ranks 123rd and Zambia ranks 120th of 144 countries.

Across the 6 decades both report, Gambia averaged higher in 2 and Zambia in 4.

Head to head by decade

Decade	Gambia	Zambia	Difference	Ahead
1960s	0.145	0.035	0.11	Gambia
1970s	0.17	0.125	0.045	Gambia
1980s	0.305	0.435	0.13	Zambia
1990s	0.57	0.905	0.335	Zambia
2000s	0.825	1.1	0.275	Zambia
2010s	1.13	1.23	0.1	Zambia

Averages of every year both report within each decade.

Frequently asked questions

Which has higher barro-lee: average years of secondary schooling, age 25+, total, Gambia or Zambia?: Zambia, at 1.23 against 1.13 in Gambia as of 2010.
What is the difference in barro-lee: average years of secondary schooling, age 25+, total between Gambia and Zambia?: 0.1, with Zambia ahead.
How many years of comparable data are there for Gambia and Zambia?: 11 years are reported by both, from 1960 to 2010.
How do Gambia and Zambia rank globally for barro-lee: average years of secondary schooling, age 25+, total?: Gambia ranks 123rd and Zambia ranks 120th 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 secondary schooling, age 25+, total. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Gambia vs Zambia: Barro-Lee: Average years of secondary schooling, age 25+, total. Statizoid, drawing on Robert J. Barro and Jong-Wha Lee: http://www.barrolee.com/. Retrieved 08 September 2026, from https://education.statizoid.com/compare/barro-lee-average-years-of-secondary-schooling-age-25-total/gambia-the/zambia/

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<a href="https://education.statizoid.com/compare/barro-lee-average-years-of-secondary-schooling-age-25-total/gambia-the/zambia/">Gambia vs Zambia: Barro-Lee: Average years of secondary schooling, age 25+, total</a> — Statizoid

About this data

Indicator: Barro-Lee: Average years of secondary 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: 04 September 2026

Average years of secondary schooling, 25+, total is the average years of secondary education completed among people over age 25.