Theoretical duration of lower secondary education in Sierra Leone
Sierra Leone: Theoretical duration of lower secondary education was 3 years in 2025. ▼ Falling
Latest (2025)
3 years
Change on year
unchanged
World rank
88th
of 215 countries
All-time high
5 years
in 1970
All-time low
3 years
in 1998
Years of data
56
1970–2025
Theoretical duration of lower secondary education in Sierra Leone, 1970–2025
Source: UNESCO Institute for Statistics. Measured in years.
Analysis
In 2025, theoretical duration of lower secondary education in Sierra Leone stood at 3 years. That is the lowest value across all 56 years on record.
Compared with earlier readings it 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 88th of 215 countries on this measure, in the middle of the range.
The long-run direction has been consistently falling across the 56 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% |
| 2021 | 3 years | +0.0% |
| 2022 | 3 years | +0.0% |
| 2023 | 3 years | +0.0% |
| 2024 | 3 years | +0.0% |
| 2025 | 3 years | +0.0% |
Averages by decade
| Decade | Average | Lowest | Highest | 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 | 6 |
Countries ranked near Sierra Leone
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More education data for Sierra Leone
- Theoretical duration of pre-primary education (years), annual growth 0 % change on previous year (2025)
- Start of the academic school year (pre-primary to post-secondary non) 0.0494 % change on previous year (2025)
- Theoretical duration of lower secondary education (years), annual 0 % change on previous year (2025)
- Theoretical duration of upper secondary education (years), annual 0 % change on previous year (2025)
- Theoretical duration of secondary education (years), annual growth 0 % change on previous year (2025)
- Start of the academic school year (tertiary education), gaps filled 2,021 tertiary education (2022)
- Start of the academic school year (tertiary education), annual growth 0.0497 % change on previous year (2014)
- Primary education, teachers, gaps filled 46,575 (2024)
- Duration of pre primary education, annual growth rate 0 % change on previous year (2025)
- Duration of pre primary education 3 (2025)
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 2025, 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 88th out of 215 countries with data for 2025.
- 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.
Download this data
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About this data
February 2026 Data Release