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

56 years are reported by both, from 1970 to 2025.

Where does this data come from?

Data API, UN Educational, Scientific and Cultural Organization (UNESCO), published as Lower secondary school starting age (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Chad vs Dominican Republic: Lower secondary school starting age

Chad

12 years

in 2025

Dominican Republic

12 years

in 2025

Chad rank

30th

Dominican Republic rank

30th

Lower secondary school starting age over time

Chad
Dominican Republic

How they compare

Chad currently reports 12 years against 12 years in Dominican Republic, a difference of 0 years.

Across all 56 years both countries report, Dominican Republic has been ahead every year.

Chad ranks 30th and Dominican Republic ranks 30th of 209 countries.

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

Head to head by decade

Decade	Chad	Dominican Republic	Difference	Ahead
1970s	12 years	13 years	1 years	Dominican Republic
1980s	12 years	13 years	1 years	Dominican Republic
1990s	12 years	12.5 years	0.5 years	Dominican Republic
2000s	12 years	12 years	0 years	—
2010s	12 years	12 years	0 years	—
2020s	12 years	12 years	0 years	—

Averages of every year both report within each decade.

Frequently asked questions

Which has higher lower secondary school starting age, Chad or Dominican Republic?: Chad, at 12 years against 12 years in Dominican Republic as of 2025.
What is the difference in lower secondary school starting age between Chad and Dominican Republic?: 0 years, with Chad ahead.
How many years of comparable data are there for Chad and Dominican Republic?: 56 years are reported by both, from 1970 to 2025.
How do Chad and Dominican Republic rank globally for lower secondary school starting age?: Chad ranks 30th and Dominican Republic ranks 30th of 209 countries.
Where does this data come from?: Data API, UN Educational, Scientific and Cultural Organization (UNESCO), published as Lower secondary school starting age (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Chad vs Dominican Republic: Lower secondary school starting age. Statizoid, drawing on Data API, UN Educational, Scientific and Cultural Organization (UNESCO). Retrieved 22 August 2026, from https://education.statizoid.com/compare/lower-secondary-school-starting-age-years/chad/dominican-republic/

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<a href="https://education.statizoid.com/compare/lower-secondary-school-starting-age-years/chad/dominican-republic/">Chad vs Dominican Republic: Lower secondary school starting age</a> — Statizoid

About this data

Indicator: Lower secondary school starting age (years)
Unit: years
Source: Data API, UN Educational, Scientific and Cultural Organization (UNESCO)
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 209 places, 11,411 data points, 1970–2025
Last refreshed: 20 August 2026

Lower secondary school starting age is the age at which students would enter lower secondary education, assuming they had started at the official entrance age for the lowest level of education, had studied full-time throughout and had progressed through the system without repeating or skipping a grade.