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

8 years are reported by both, from 2002 to 2017.

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.

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

Algeria

17.9%

in 2018

Chad

19.0%

in 2017

Algeria rank

19th

Chad rank

16th

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

Algeria
Chad

How they compare

Chad currently reports 19.0% against 17.9% in Algeria, a difference of 1.1%.

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

The two have swapped places 1 time across 8 shared years of data; in 2002 it was Algeria ahead.

Algeria ranks 19th and Chad ranks 16th of 156 countries.

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

Head to head by decade

Decade	Algeria	Chad	Difference	Ahead
2000s	23.1%	20.2%	3.0%	Algeria
2010s	18.3%	21.1%	2.8%	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), Algeria or Chad?: Chad, at 19.0% against 17.9% in Algeria as of 2017.
What is the difference in repetition rate in lower secondary general education (all grades) between Algeria and Chad?: 1.1%, with Chad ahead.
How many years of comparable data are there for Algeria and Chad?: 8 years are reported by both, from 2002 to 2017.
How do Algeria and Chad rank globally for repetition rate in lower secondary general education (all grades)?: Algeria ranks 19th and Chad ranks 16th 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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Algeria vs Chad: Repetition rate in lower secondary general education (all grades). Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 02 September 2026, from https://reference.statizoid.com/compare/repetition-rate-in-lower-secondary-general-education-all-grades-both-sexes-percent/algeria/chad/

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<a href="https://reference.statizoid.com/compare/repetition-rate-in-lower-secondary-general-education-all-grades-both-sexes-percent/algeria/chad/">Algeria vs Chad: 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.