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

6 years are reported by both, from 1998 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.

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

Sudan

3 years

in 2020

United States Virgin Islands

3 years

in 2020

Sudan rank

81st

United States Virgin Islands rank

81st

Theoretical duration of lower secondary education over time

Sudan
United States Virgin Islands

How they compare

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

Across all 6 years both countries report, United States Virgin Islands has been ahead every year.

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

United States Virgin Islands has averaged higher in every one of the 3 decades both report.

Head to head by decade

Decade	Sudan	United States Virgin Islands	Difference	Ahead
1990s	2 years	3 years	1 years	United States Virgin Islands
2010s	2 years	3 years	1 years	United States Virgin Islands
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, Sudan or United States Virgin Islands?: Sudan, 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 Sudan and United States Virgin Islands?: 0 years, with Sudan ahead.
How many years of comparable data are there for Sudan and United States Virgin Islands?: 6 years are reported by both, from 1998 to 2020.
How do Sudan and United States Virgin Islands rank globally for theoretical duration of lower secondary education?: Sudan 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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Sudan vs United States Virgin Islands: Theoretical duration of lower secondary education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 03 September 2026, from https://education.statizoid.com/compare/theoretical-duration-of-lower-secondary-education-years/sudan/virgin-islands-u-s/

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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: 21 August 2026

Number of grades (years) in lower secondary education.