Grenada vs Tonga: Theoretical duration of upper secondary education

Grenada
2 years
in 2020
Tonga
2 years
in 2020
Grenada rank
156th
Tonga rank
156th

Theoretical duration of upper secondary education over time

  • Grenada
  • Tonga
0123197019952020

How they compare

Grenada currently reports 2 years against 2 years in Tonga, a difference of 0 years.

Across all 51 years both countries report, Tonga has been ahead every year.

Grenada ranks 156th and Tonga ranks 156th of 209 countries.

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

Head to head by decade

Decade Grenada Tonga Difference Ahead
1970s 2 years 2 years 0 years
1980s 2 years 2.6 years 0.6 years Tonga
1990s 2 years 2.8 years 0.8 years Tonga
2000s 2 years 2 years 0 years
2010s 2 years 2 years 0 years
2020s 2 years 2 years 0 years

Averages of every year both report within each decade.

Frequently asked questions

Which has higher theoretical duration of upper secondary education, Grenada or Tonga?
Grenada, at 2 years against 2 years in Tonga as of 2020.
What is the difference in theoretical duration of upper secondary education between Grenada and Tonga?
0 years, with Grenada ahead.
How many years of comparable data are there for Grenada and Tonga?
51 years are reported by both, from 1970 to 2020.
How do Grenada and Tonga rank globally for theoretical duration of upper secondary education?
Grenada ranks 156th and Tonga ranks 156th of 209 countries.
Where does this data come from?
UNESCO Institute for Statistics, published as Theoretical duration of upper secondary education (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Grenada vs Tonga: Theoretical duration of upper secondary education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 21 August 2026, from https://education.statizoid.com/compare/theoretical-duration-of-upper-secondary-education-years/grenada/tonga/

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About this data

Indicator
Theoretical duration of 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

Number of grades (years) in upper secondary education.