How many years of comparable data are there for Botswana and Tonga?

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 tertiary schooling, age 75+, total. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Botswana vs Tonga: Barro-Lee: Average years of tertiary schooling, age 75+, total

Botswana

0.06

in 2010

Tonga

0.05

in 2010

Botswana rank

89th

Tonga rank

91st

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

Botswana
Tonga

How they compare

Botswana currently reports 0.06 against 0.05 in Tonga, a difference of 0.01.

That makes Botswana's figure about 1.2 times Tonga's.

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

Botswana ranks 89th and Tonga ranks 91st of 144 countries.

Across the 6 decades both report, Botswana averaged higher in 1 and Tonga in 5.

Head to head by decade

Decade	Botswana	Tonga	Difference	Ahead
1960s	0.01	0.05	0.04	Tonga
1970s	0.005	0.065	0.06	Tonga
1980s	0.02	0.075	0.055	Tonga
1990s	0.015	0.08	0.065	Tonga
2000s	0.03	0.11	0.08	Tonga
2010s	0.06	0.05	0.01	Botswana

Averages of every year both report within each decade.

Frequently asked questions

Which has higher barro-lee: average years of tertiary schooling, age 75+, total, Botswana or Tonga?: Botswana, at 0.06 against 0.05 in Tonga as of 2010.
What is the difference in barro-lee: average years of tertiary schooling, age 75+, total between Botswana and Tonga?: 0.01, with Botswana ahead.
How many years of comparable data are there for Botswana and Tonga?: 11 years are reported by both, from 1960 to 2010.
How do Botswana and Tonga rank globally for barro-lee: average years of tertiary schooling, age 75+, total?: Botswana ranks 89th and Tonga ranks 91st 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 tertiary schooling, age 75+, total. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Individual pages

About this data

Indicator: Barro-Lee: Average years of tertiary 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 tertiary schooling, 75+, total is the average years of tertiary education completed among people over age 75.