What is the difference in theoretical duration of lower secondary education between Sierra Leone and United States Virgin Islands?

0 years, with Sierra Leone ahead.

How many years of comparable data are there for Sierra Leone and United States Virgin Islands?

22 years are reported by both, from 1982 to 2020.

Where does this data come from?

UNESCO Institute for Statistics, published as Theoretical duration of lower secondary education (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Sierra Leone vs United States Virgin Islands: Theoretical duration of lower secondary education

Sierra Leone

3 years

in 2020

United States Virgin Islands

3 years

in 2020

Sierra Leone rank

81st

United States Virgin Islands rank

81st

Theoretical duration of lower secondary education over time

Sierra Leone
United States Virgin Islands

How they compare

Sierra Leone currently reports 3 years against 3 years in United States Virgin Islands, a difference of 0 years.

The two have swapped places 1 time across 22 shared years of data; in 1982 it was Sierra Leone ahead.

Sierra Leone ranks 81st and United States Virgin Islands ranks 81st of 209 countries.

Sierra Leone has averaged higher in every one of the 4 decades both report.

Head to head by decade

Decade	Sierra Leone	United States Virgin Islands	Difference	Ahead
1980s	5 years	3 years	2 years	Sierra Leone
1990s	4.6 years	3 years	1.6 years	Sierra Leone
2010s	3 years	3 years	0 years	—
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 lower secondary education, Sierra Leone or United States Virgin Islands?: Sierra Leone, at 3 years against 3 years in United States Virgin Islands as of 2020.
What is the difference in theoretical duration of lower secondary education between Sierra Leone and United States Virgin Islands?: 0 years, with Sierra Leone ahead.
How many years of comparable data are there for Sierra Leone and United States Virgin Islands?: 22 years are reported by both, from 1982 to 2020.
How do Sierra Leone and United States Virgin Islands rank globally for theoretical duration of lower secondary education?: Sierra Leone ranks 81st and United States Virgin Islands ranks 81st of 209 countries.
Where does this data come from?: UNESCO Institute for Statistics, published as Theoretical duration of lower 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 United States Virgin Islands: Theoretical duration of lower secondary education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 05 September 2026, from https://education.statizoid.com/compare/theoretical-duration-of-lower-secondary-education-years/sierra-leone/virgin-islands-u-s/

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<a href="https://education.statizoid.com/compare/theoretical-duration-of-lower-secondary-education-years/sierra-leone/virgin-islands-u-s/">Sierra Leone vs United States Virgin Islands: Theoretical duration of lower secondary education</a> — Statizoid

About this data

Indicator: Theoretical duration of lower 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 lower secondary education.