Sierra Leone vs Viet Nam: Theoretical duration of secondary education
Sierra Leone
7 years
in 2025
Viet Nam
7 years
in 2025
Sierra Leone rank
26th
Viet Nam rank
26th
Theoretical duration of secondary education over time
- Sierra Leone
- Viet Nam
How they compare
Sierra Leone currently reports 7 years against 7 years in Viet Nam, a difference of 0 years.
The two have swapped places 3 times across 56 shared years of data; in 1970 it was Sierra Leone ahead.
Sierra Leone ranks 26th and Viet Nam ranks 26th of 215 countries.
Across the 6 decades both report, Sierra Leone averaged higher in 1 and Viet Nam in 3.
Head to head by decade
| Decade | Sierra Leone | Viet Nam | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 7 years | 6.4 years | 0.6 years | Sierra Leone |
| 1980s | 7 years | 7 years | 0 years | — |
| 1990s | 6.9 years | 7 years | 0.1 years | Viet Nam |
| 2000s | 6 years | 7 years | 1 years | Viet Nam |
| 2010s | 6.7 years | 7 years | 0.3 years | Viet Nam |
| 2020s | 7 years | 7 years | 0 years | — |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher theoretical duration of secondary education, Sierra Leone or Viet Nam?
- Sierra Leone, at 7 years against 7 years in Viet Nam as of 2025.
- What is the difference in theoretical duration of secondary education between Sierra Leone and Viet Nam?
- 0 years, with Sierra Leone ahead.
- How many years of comparable data are there for Sierra Leone and Viet Nam?
- 56 years are reported by both, from 1970 to 2025.
- How do Sierra Leone and Viet Nam rank globally for theoretical duration of secondary education?
- Sierra Leone ranks 26th and Viet Nam ranks 26th of 215 countries.
- Where does this data come from?
- UNESCO Institute for Statistics, published as Theoretical duration of 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