What is the difference in theoretical duration of upper secondary education between Sao Tome and Principe and Tuvalu?

0 years, with Sao Tome and Principe ahead.

How many years of comparable data are there for Sao Tome and Principe and Tuvalu?

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

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.

Sao Tome and Principe vs Tuvalu: Theoretical duration of upper secondary education

Sao Tome and Principe

3 years

in 2020

Tuvalu

3 years

in 2020

Sao Tome and Principe rank

52nd

Tuvalu rank

52nd

Theoretical duration of upper secondary education over time

Sao Tome and Principe
Tuvalu

How they compare

Sao Tome and Principe currently reports 3 years against 3 years in Tuvalu, a difference of 0 years.

The two have swapped places 1 time across 51 shared years of data; in 1970 it was Sao Tome and Principe ahead.

Sao Tome and Principe ranks 52nd and Tuvalu ranks 52nd of 209 countries.

Across the 6 decades both report, Sao Tome and Principe averaged higher in 2 and Tuvalu in 3.

Head to head by decade

Decade	Sao Tome and Principe	Tuvalu	Difference	Ahead
1970s	3 years	2 years	1 years	Sao Tome and Principe
1980s	2.8 years	2 years	0.8 years	Sao Tome and Principe
1990s	2.1 years	2.2 years	0.1 years	Tuvalu
2000s	2.6 years	3 years	0.4 years	Tuvalu
2010s	2.9 years	3 years	0.1 years	Tuvalu
2020s	3 years	3 years	0 years	—

Averages of every year both report within each decade.

Frequently asked questions

Which has higher theoretical duration of upper secondary education, Sao Tome and Principe or Tuvalu?: Sao Tome and Principe, at 3 years against 3 years in Tuvalu as of 2020.
What is the difference in theoretical duration of upper secondary education between Sao Tome and Principe and Tuvalu?: 0 years, with Sao Tome and Principe ahead.
How many years of comparable data are there for Sao Tome and Principe and Tuvalu?: 51 years are reported by both, from 1970 to 2020.
How do Sao Tome and Principe and Tuvalu rank globally for theoretical duration of upper secondary education?: Sao Tome and Principe ranks 52nd and Tuvalu ranks 52nd 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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Sao Tome and Principe vs Tuvalu: Theoretical duration of upper secondary education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 07 September 2026, from https://education.statizoid.com/compare/theoretical-duration-of-upper-secondary-education-years/sao-tome-and-principe/tuvalu/

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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: 04 September 2026

Number of grades (years) in upper secondary education.