How many years of comparable data are there for Chad and Iran, Islamic Republic of?

19 years are reported by both, from 1988 to 2017.

Where does this data come from?

UNESCO Institute for Statistics, published as Repeaters in Grade 1 of lower secondary general education, male (number). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Chad vs Iran, Islamic Republic of: Repeaters in Grade 1 of lower secondary general education, male

Chad

15,908 number

in 2018

Iran, Islamic Republic of

14,516 number

in 2017

Chad rank

31st

Iran, Islamic Republic of rank

33rd

Repeaters in Grade 1 of lower secondary general education, male over time

Chad
Iran, Islamic Republic of

How they compare

Chad currently reports 15,908 number against 14,516 number in Iran, Islamic Republic of, a difference of 1,392 number.

That makes Chad's figure about 1.1 times Iran, Islamic Republic of's.

The two have swapped places 1 time across 19 shared years of data; in 1988 it was Iran, Islamic Republic of ahead.

Chad ranks 31st and Iran, Islamic Republic of ranks 33rd of 183 countries.

Iran, Islamic Republic of has averaged higher in every one of the 4 decades both report.

Head to head by decade

Decade	Chad	Iran, Islamic Republic of	Difference	Ahead
1980s	1,551 number	109,979 number	108,428 number	Iran, Islamic Republic of
1990s	2,474 number	144,388 number	141,915 number	Iran, Islamic Republic of
2000s	8,220 number	105,308 number	97,088 number	Iran, Islamic Republic of
2010s	15,172 number	29,250 number	14,078 number	Iran, Islamic Republic of

Averages of every year both report within each decade.

Frequently asked questions

Which has higher repeaters in grade 1 of lower secondary general education, male, Chad or Iran, Islamic Republic of?: Chad, at 15,908 number against 14,516 number in Iran, Islamic Republic of as of 2018.
What is the difference in repeaters in grade 1 of lower secondary general education, male between Chad and Iran, Islamic Republic of?: 1,392 number, with Chad ahead.
How many years of comparable data are there for Chad and Iran, Islamic Republic of?: 19 years are reported by both, from 1988 to 2017.
How do Chad and Iran, Islamic Republic of rank globally for repeaters in grade 1 of lower secondary general education, male?: Chad ranks 31st and Iran, Islamic Republic of ranks 33rd of 183 countries.
Where does this data come from?: UNESCO Institute for Statistics, published as Repeaters in Grade 1 of lower secondary general education, male (number). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Chad vs Iran, Islamic Republic of: Repeaters in Grade 1 of lower secondary general education, male. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 31 August 2026, from https://reference.statizoid.com/compare/repeaters-in-grade-1-of-lower-secondary-general-education-male-number/chad/iran-islamic-rep/

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About this data

Indicator: Repeaters in Grade 1 of lower secondary general education, male (number)
Unit: number
Source: UNESCO Institute for Statistics
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 183 places, 3,751 data points, 1970–2020
Last refreshed: 21 August 2026

Number of pupils in the specified grade who are enrolled in the same grade for a second (or further) year.