What is the difference in theoretical duration of upper secondary education between Sierra Leone and Switzerland?

0 years, with Sierra Leone ahead.

How many years of comparable data are there for Sierra Leone and Switzerland?

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.

Sierra Leone vs Switzerland: Theoretical duration of upper secondary education

Sierra Leone

4 years

in 2020

Switzerland

4 years

in 2020

Sierra Leone rank

5th

Switzerland rank

5th

Theoretical duration of upper secondary education over time

Sierra Leone
Switzerland

How they compare

Sierra Leone currently reports 4 years against 4 years in Switzerland, a difference of 0 years.

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

Sierra Leone ranks 5th and Switzerland ranks 5th of 209 countries.

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

Head to head by decade

Decade	Sierra Leone	Switzerland	Difference	Ahead
1970s	2 years	4 years	2 years	Switzerland
1980s	2 years	4 years	2 years	Switzerland
1990s	2.3 years	4 years	1.7 years	Switzerland
2000s	3 years	4 years	1 years	Switzerland
2010s	3.7 years	4 years	0.3 years	Switzerland
2020s	4 years	4 years	0 years	—

Averages of every year both report within each decade.

Frequently asked questions

Which has higher theoretical duration of upper secondary education, Sierra Leone or Switzerland?: Sierra Leone, at 4 years against 4 years in Switzerland as of 2020.
What is the difference in theoretical duration of upper secondary education between Sierra Leone and Switzerland?: 0 years, with Sierra Leone ahead.
How many years of comparable data are there for Sierra Leone and Switzerland?: 51 years are reported by both, from 1970 to 2020.
How do Sierra Leone and Switzerland rank globally for theoretical duration of upper secondary education?: Sierra Leone ranks 5th and Switzerland ranks 5th 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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Sierra Leone vs Switzerland: Theoretical duration of upper secondary education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 01 September 2026, from https://education.statizoid.com/compare/theoretical-duration-of-upper-secondary-education-years/sierra-leone/switzerland/

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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: 21 August 2026

Number of grades (years) in upper secondary education.