Sierra Leone vs Solomon Islands: Theoretical duration of upper secondary education
Sierra Leone
4 years
in 2025
Solomon Islands
4 years
in 2025
Sierra Leone rank
6th
Solomon Islands rank
6th
Theoretical duration of upper secondary education over time
- Sierra Leone
- Solomon Islands
How they compare
Sierra Leone currently reports 4 years against 4 years in Solomon Islands, a difference of 0 years.
The two have swapped places 2 times across 56 shared years of data; in 1970 it was Solomon Islands ahead.
Sierra Leone ranks 6th and Solomon Islands ranks 6th of 215 countries.
Solomon Islands has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | Sierra Leone | Solomon Islands | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 2 years | 2 years | 0 years | — |
| 1980s | 2 years | 2 years | 0 years | — |
| 1990s | 2.3 years | 2.6 years | 0.3 years | Solomon Islands |
| 2000s | 3 years | 4 years | 1 years | Solomon Islands |
| 2010s | 3.7 years | 4 years | 0.3 years | Solomon Islands |
| 2020s | 4 years | 4 years | 0 years | — |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher theoretical duration of upper secondary education, Sierra Leone or Solomon Islands?
- Sierra Leone, at 4 years against 4 years in Solomon Islands as of 2025.
- What is the difference in theoretical duration of upper secondary education between Sierra Leone and Solomon Islands?
- 0 years, with Sierra Leone ahead.
- How many years of comparable data are there for Sierra Leone and Solomon Islands?
- 56 years are reported by both, from 1970 to 2025.
- How do Sierra Leone and Solomon Islands rank globally for theoretical duration of upper secondary education?
- Sierra Leone ranks 6th and Solomon Islands ranks 6th of 215 countries.
- Where does this data come from?
- UNESCO Institute for Statistics, published as Theoretical duration of upper secondary education (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
February 2026 Data Release