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

5 years are reported by both, from 2002 to 2011.

Where does this data come from?

UNESCO Institute for Statistics, published as Repetition rate in lower secondary general education (all grades), both sexes (%). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Chad vs Congo: Repetition rate in lower secondary general education (all grades)

Chad

19.0%

in 2017

Congo

18.4%

in 2011

Chad rank

16th

Congo rank

17th

Repetition rate in lower secondary general education (all grades) over time

Chad
Congo

How they compare

Chad currently reports 19.0% against 18.4% in Congo, a difference of 0.6%.

The two have swapped places 1 time across 5 shared years of data; in 2002 it was Congo ahead.

Chad ranks 16th and Congo ranks 17th of 156 countries.

Across the 2 decades both report, Chad averaged higher in 1 and Congo in 1.

Head to head by decade

Decade	Chad	Congo	Difference	Ahead
2000s	20.2%	29.0%	8.9%	Congo
2010s	19.7%	19.5%	0.2%	Chad

Averages of every year both report within each decade.

Frequently asked questions

Which has higher repetition rate in lower secondary general education (all grades), Chad or Congo?: Chad, at 19.0% against 18.4% in Congo as of 2017.
What is the difference in repetition rate in lower secondary general education (all grades) between Chad and Congo?: 0.6%, with Chad ahead.
How many years of comparable data are there for Chad and Congo?: 5 years are reported by both, from 2002 to 2011.
How do Chad and Congo rank globally for repetition rate in lower secondary general education (all grades)?: Chad ranks 16th and Congo ranks 17th of 156 countries.
Where does this data come from?: UNESCO Institute for Statistics, published as Repetition rate in lower secondary general education (all grades), both sexes (%). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Chad vs Congo: Repetition rate in lower secondary general education (all grades). Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 28 August 2026, from https://reference.statizoid.com/compare/repetition-rate-in-lower-secondary-general-education-all-grades-both-sexes-percent/chad/congo-rep/

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<a href="https://reference.statizoid.com/compare/repetition-rate-in-lower-secondary-general-education-all-grades-both-sexes-percent/chad/congo-rep/">Chad vs Congo: Repetition rate in lower secondary general education (all grades)</a> — Statizoid

About this data

Indicator: Repetition rate in lower secondary general education (all grades), both sexes (%)
Unit: %
Source: UNESCO Institute for Statistics
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 156 places, 2,040 data points, 1970–2019
Last refreshed: 21 August 2026

Number of repeaters in lower secondary education in a given school year, expressed as a percentage of enrolment in lower secondary education in the previous school year. Divide the number of repeaters in lower secondary education in school year t+1 by the number of pupils from the same cohort enrolled in lower secondary education in the previous school year t.