Sierra Leone vs Slovenia: Theoretical duration of lower secondary education

Sierra Leone
3 years
in 2020
Slovenia
3 years
in 2020
Sierra Leone rank
81st
Slovenia rank
81st

Theoretical duration of lower secondary education over time

  • Sierra Leone
  • Slovenia
012345197019952020

How they compare

Sierra Leone currently reports 3 years against 3 years in Slovenia, a difference of 0 years.

The two have swapped places 1 time across 51 shared years of data; in 1970 it was Sierra Leone ahead.

Sierra Leone ranks 81st and Slovenia ranks 81st of 209 countries.

Across the 6 decades both report, Sierra Leone averaged higher in 3 and Slovenia in 1.

Head to head by decade

Decade Sierra Leone Slovenia Difference Ahead
1970s 5 years 4 years 1 years Sierra Leone
1980s 5 years 4 years 1 years Sierra Leone
1990s 4.6 years 4 years 0.6 years Sierra Leone
2000s 3 years 3.7 years 0.7 years Slovenia
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 Slovenia?
Sierra Leone, at 3 years against 3 years in Slovenia as of 2020.
What is the difference in theoretical duration of lower secondary education between Sierra Leone and Slovenia?
0 years, with Sierra Leone ahead.
How many years of comparable data are there for Sierra Leone and Slovenia?
51 years are reported by both, from 1970 to 2020.
How do Sierra Leone and Slovenia rank globally for theoretical duration of lower secondary education?
Sierra Leone ranks 81st and Slovenia 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 Slovenia: Theoretical duration of lower secondary education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 04 September 2026, from https://education.statizoid.com/compare/theoretical-duration-of-lower-secondary-education-years/sierra-leone/slovenia/

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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

Number of grades (years) in lower secondary education.