Poland vs Sierra Leone: Theoretical duration of upper secondary education
Poland
4 years
in 2025
Sierra Leone
4 years
in 2025
Poland rank
6th
Sierra Leone rank
6th
Theoretical duration of upper secondary education over time
- Poland
- Sierra Leone
How they compare
Poland currently reports 4 years against 4 years in Sierra Leone, a difference of 0 years.
The two have swapped places 1 time across 56 shared years of data; in 1970 it was Poland ahead.
Poland ranks 6th and Sierra Leone ranks 6th of 215 countries.
Across the 6 decades both report, Poland averaged higher in 4 and Sierra Leone in 1.
Head to head by decade
| Decade | Poland | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 3.8 years | 2 years | 1.8 years | Poland |
| 1980s | 3.9 years | 2 years | 1.9 years | Poland |
| 1990s | 4 years | 2.3 years | 1.7 years | Poland |
| 2000s | 3.2 years | 3 years | 0.2 years | Poland |
| 2010s | 3 years | 3.7 years | 0.7 years | Sierra Leone |
| 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, Poland or Sierra Leone?
- Poland, at 4 years against 4 years in Sierra Leone as of 2025.
- What is the difference in theoretical duration of upper secondary education between Poland and Sierra Leone?
- 0 years, with Poland ahead.
- How many years of comparable data are there for Poland and Sierra Leone?
- 56 years are reported by both, from 1970 to 2025.
- How do Poland and Sierra Leone rank globally for theoretical duration of upper secondary education?
- Poland ranks 6th and Sierra Leone 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