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

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 Korea: Population of the official entrance age to secondary general

Chad

425,138 number

in 2020

Korea

455,639 number

in 2020

Chad rank

55th

Korea rank

54th

Population of the official entrance age to secondary general over time

Chad
Korea

How they compare

Korea currently reports 455,639 number against 425,138 number in Chad, a difference of 30,501 number.

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

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

Chad ranks 55th and Korea ranks 54th of 205 countries.

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

Head to head by decade

Decade	Chad	Korea	Difference	Ahead
1970s	91,399 number	901,351 number	809,952 number	Korea
1980s	117,671 number	873,408 number	755,738 number	Korea
1990s	168,376 number	744,972 number	576,596 number	Korea
2000s	248,564 number	665,156 number	416,592 number	Korea
2010s	358,994 number	523,439 number	164,445 number	Korea
2020s	425,138 number	455,639 number	30,501 number	Korea

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 Korea?: Korea, at 455,639 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 Korea?: 30,501 number, with Korea ahead.
How many years of comparable data are there for Chad and Korea?: 51 years are reported by both, from 1970 to 2020.
How do Chad and Korea rank globally for population of the official entrance age to secondary general?: Chad ranks 55th and Korea ranks 54th 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 Korea: 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/korea-rep/

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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/korea-rep/">Chad vs Korea: 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.