What is the difference in official entrance age to upper secondary education between Tanzania, United Republic of and Tonga?

1 years, with Tanzania, United Republic of ahead.

How many years of comparable data are there for Tanzania, United Republic of and Tonga?

51 years are reported by both, from 1970 to 2020.

Where does this data come from?

UNESCO Institute for Statistics, published as Official entrance age to upper secondary education (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Tanzania, United Republic of vs Tonga: Official entrance age to upper secondary education

Tanzania, United Republic of

18 years

in 2020

Tonga

17 years

in 2020

Tanzania, United Republic of rank

1st

Tonga rank

2nd

Official entrance age to upper secondary education over time

Tanzania, United Republic of
Tonga

How they compare

Tanzania, United Republic of currently reports 18 years against 17 years in Tonga, a difference of 1 years.

That makes Tanzania, United Republic of's figure about 1.1 times Tonga's.

Across all 51 years both countries report, Tanzania, United Republic of has been ahead every year.

Tanzania, United Republic of ranks 1st and Tonga ranks 2nd of 209 countries.

Tanzania, United Republic of has averaged higher in every one of the 6 decades both report.

Head to head by decade

Decade	Tanzania, United Republic of	Tonga	Difference	Ahead
1970s	18 years	16 years	2 years	Tanzania, United Republic of
1980s	18 years	15.4 years	2.6 years	Tanzania, United Republic of
1990s	18 years	15 years	3 years	Tanzania, United Republic of
2000s	18 years	15 years	3 years	Tanzania, United Republic of
2010s	18 years	16.6 years	1.4 years	Tanzania, United Republic of
2020s	18 years	17 years	1 years	Tanzania, United Republic of

Averages of every year both report within each decade.

Frequently asked questions

Which has higher official entrance age to upper secondary education, Tanzania, United Republic of or Tonga?: Tanzania, United Republic of, at 18 years against 17 years in Tonga as of 2020.
What is the difference in official entrance age to upper secondary education between Tanzania, United Republic of and Tonga?: 1 years, with Tanzania, United Republic of ahead.
How many years of comparable data are there for Tanzania, United Republic of and Tonga?: 51 years are reported by both, from 1970 to 2020.
How do Tanzania, United Republic of and Tonga rank globally for official entrance age to upper secondary education?: Tanzania, United Republic of ranks 1st and Tonga ranks 2nd of 209 countries.
Where does this data come from?: UNESCO Institute for Statistics, published as Official entrance age to upper secondary education (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Tanzania, United Republic of vs Tonga: Official entrance age to upper secondary education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 03 September 2026, from https://education.statizoid.com/compare/official-entrance-age-to-upper-secondary-education-years/tanzania/tonga/

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About this data

Indicator: Official entrance age to upper secondary education (years)
Unit: years
Source: UNESCO Institute for Statistics
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 209 places, 10,366 data points, 1970–2020
Last refreshed: 21 August 2026

Age at which students would enter upper 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.