Which has higher lower secondary school starting age, North Korea or Tonga?

North Korea, at 12 years against 12 years in Tonga as of 2025.

What is the difference in lower secondary school starting age between North Korea and Tonga?

0 years, with North Korea ahead.

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

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.

North Korea vs Tonga: Lower secondary school starting age

North Korea

12 years

in 2025

Tonga

12 years

in 2025

North Korea rank

30th

Tonga rank

30th

Lower secondary school starting age over time

North Korea
Tonga

How they compare

North Korea currently reports 12 years against 12 years in Tonga, a difference of 0 years.

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

North Korea ranks 30th and Tonga ranks 30th of 209 countries.

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

Head to head by decade

Decade	North Korea	Tonga	Difference	Ahead
1970s	10 years	12 years	2 years	Tonga
1980s	10 years	11.4 years	1.4 years	Tonga
1990s	10.2 years	11 years	0.8 years	Tonga
2000s	11 years	11 years	0 years	—
2010s	11.6 years	11.8 years	0.2 years	Tonga
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, North Korea or Tonga?: North Korea, at 12 years against 12 years in Tonga as of 2025.
What is the difference in lower secondary school starting age between North Korea and Tonga?: 0 years, with North Korea ahead.
How many years of comparable data are there for North Korea and Tonga?: 56 years are reported by both, from 1970 to 2025.
How do North Korea and Tonga rank globally for lower secondary school starting age?: North Korea ranks 30th and Tonga 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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North Korea vs Tonga: Lower secondary school starting age. Statizoid, drawing on Data API, UN Educational, Scientific and Cultural Organization (UNESCO). Retrieved 27 August 2026, from https://education.statizoid.com/compare/lower-secondary-school-starting-age-years/korea-dem-people-s-rep/tonga/

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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.