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

51 years are reported by both, from 1970 to 2020.

Where does this data come from?

UNESCO Institute for Statistics, published as Population of the official entrance age to secondary general education, both sexes (number). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Chad vs Zambia: Population of the official entrance age to secondary general

Chad

425,138 number

in 2020

Zambia

462,315 number

in 2020

Chad rank

55th

Zambia rank

53rd

Population of the official entrance age to secondary general over time

Chad
Zambia

How they compare

Zambia currently reports 462,315 number against 425,138 number in Chad, a difference of 37,177 number.

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

Across all 51 years both countries report, Zambia has been ahead every year.

Chad ranks 55th and Zambia ranks 53rd of 205 countries.

Zambia has averaged higher in every one of the 6 decades both report.

Head to head by decade

Decade	Chad	Zambia	Difference	Ahead
1970s	91,399 number	116,501 number	25,102 number	Zambia
1980s	117,671 number	166,103 number	48,432 number	Zambia
1990s	168,376 number	226,709 number	58,333 number	Zambia
2000s	248,564 number	286,364 number	37,799 number	Zambia
2010s	358,994 number	391,585 number	32,591 number	Zambia
2020s	425,138 number	462,315 number	37,177 number	Zambia

Averages of every year both report within each decade.

Frequently asked questions

Which has higher population of the official entrance age to secondary general, Chad or Zambia?: Zambia, at 462,315 number against 425,138 number in Chad as of 2020.
What is the difference in population of the official entrance age to secondary general between Chad and Zambia?: 37,177 number, with Zambia ahead.
How many years of comparable data are there for Chad and Zambia?: 51 years are reported by both, from 1970 to 2020.
How do Chad and Zambia rank globally for population of the official entrance age to secondary general?: Chad ranks 55th and Zambia ranks 53rd of 205 countries.
Where does this data come from?: UNESCO Institute for Statistics, published as Population of the official entrance age to secondary general education, both sexes (number). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Chad vs Zambia: Population of the official entrance age to secondary general. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 12 September 2026, from https://reference.statizoid.com/compare/population-of-the-official-entrance-age-to-secondary-general-education-both-sexes-number/chad/zambia/

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<a href="https://reference.statizoid.com/compare/population-of-the-official-entrance-age-to-secondary-general-education-both-sexes-number/chad/zambia/">Chad vs Zambia: Population of the official entrance age to secondary general</a> — Statizoid

About this data

Indicator: Population of the official entrance age to secondary general education, both sexes (number)
Unit: number
Source: UNESCO Institute for Statistics
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 205 places, 10,014 data points, 1970–2020
Last refreshed: 04 September 2026

Population of the age-group theoretically corresponding to secondary general education as indicated by theoretical entrance age and duration.