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Theoretical duration of lower secondary education in Sierra Leone

Sierra Leone: Theoretical duration of lower secondary education was 3 years in 2020. ▼ Falling

Latest (2020)
3 years
Change on year
unchanged
World rank
81st
of 209 countries
All-time high
5 years
in 1970
All-time low
3 years
in 1998
Years of data
51
1970–2020

Theoretical duration of lower secondary education in Sierra Leone, 1970–2020

012345197019952020

Source: UNESCO Institute for Statistics. Measured in years.

Analysis

Sierra Leone recorded 3 years for theoretical duration of lower secondary education in 2020. That is the lowest value across all 51 years on record.

The figure is unchanged over ten years.

Over the whole period, theoretical duration of lower secondary education in Sierra Leone peaked at 5 years in 1970 and was at its lowest, 3 years, in 1998.

Sierra Leone ranks 81st of 209 countries on this measure, in the middle of the range.

The long-run direction has been consistently falling across the 51 years of available data.

Theoretical duration of lower secondary education in Sierra Leone, year by year

Year years Change
1970 5 years —
1971 5 years +0.0%
1972 5 years +0.0%
1973 5 years +0.0%
1974 5 years +0.0%
1975 5 years +0.0%
1976 5 years +0.0%
1977 5 years +0.0%
1978 5 years +0.0%
1979 5 years +0.0%
1980 5 years +0.0%
1981 5 years +0.0%
1982 5 years +0.0%
1983 5 years +0.0%
1984 5 years +0.0%
1985 5 years +0.0%
1986 5 years +0.0%
1987 5 years +0.0%
1988 5 years +0.0%
1989 5 years +0.0%
1990 5 years +0.0%
1991 5 years +0.0%
1992 5 years +0.0%
1993 5 years +0.0%
1994 5 years +0.0%
1995 5 years +0.0%
1996 5 years +0.0%
1997 5 years +0.0%
1998 3 years -40.0%
1999 3 years +0.0%
2000 3 years +0.0%
2001 3 years +0.0%
2002 3 years +0.0%
2003 3 years +0.0%
2004 3 years +0.0%
2005 3 years +0.0%
2006 3 years +0.0%
2007 3 years +0.0%
2008 3 years +0.0%
2009 3 years +0.0%
2010 3 years +0.0%
2011 3 years +0.0%
2012 3 years +0.0%
2013 3 years +0.0%
2014 3 years +0.0%
2015 3 years +0.0%
2016 3 years +0.0%
2017 3 years +0.0%
2018 3 years +0.0%
2019 3 years +0.0%
2020 3 years +0.0%

Averages by decade

DecadeAverage LowestHighest Years
1970s 5 years 5 years 5 years 10
1980s 5 years 5 years 5 years 10
1990s 4.6 years 3 years 5 years 10
2000s 3 years 3 years 3 years 10
2010s 3 years 3 years 3 years 10
2020s 3 years 3 years 3 years 1

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See the full ranking of 209 places →

More education data for Sierra Leone

All data for Sierra Leone →

Frequently asked questions

What is theoretical duration of lower secondary education in Sierra Leone?
Theoretical duration of lower secondary education in Sierra Leone was 3 years in 2020, according to UNESCO Institute for Statistics.
What is the highest theoretical duration of lower secondary education recorded in Sierra Leone?
The highest recorded value was 5 years in 1970.
What is the lowest theoretical duration of lower secondary education recorded in Sierra Leone?
The lowest recorded value was 3 years in 1998.
How does Sierra Leone rank for theoretical duration of lower secondary education?
Sierra Leone ranks 81st out of 209 countries with data for 2020.
Is theoretical duration of lower secondary education rising or falling in Sierra Leone?
Over the last ten years it is unchanged. The long-run trend across the full record is falling.
Where does this Sierra Leone data come from?
The figures come from UNESCO Institute for Statistics, published as part of Theoretical duration of lower secondary education (years). Statizoid updates them automatically from the source API.

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Theoretical duration of lower secondary education in Sierra Leone. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 28 August 2026, from https://education.statizoid.com/stat/theoretical-duration-of-lower-secondary-education-years/sierra-leone/

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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.