Tonga vs Viet Nam: Theoretical duration of secondary education
Tonga
7 years
in 2025
Viet Nam
7 years
in 2025
Tonga rank
26th
Viet Nam rank
26th
Theoretical duration of secondary education over time
- Tonga
- Viet Nam
How they compare
Tonga currently reports 7 years against 7 years in Viet Nam, a difference of 0 years.
Across all 56 years both countries report, Viet Nam has been ahead every year.
Tonga ranks 26th and Viet Nam ranks 26th of 215 countries.
Viet Nam has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | Tonga | Viet Nam | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 6 years | 6.4 years | 0.4 years | Viet Nam |
| 1980s | 6.6 years | 7 years | 0.4 years | Viet Nam |
| 1990s | 6.8 years | 7 years | 0.2 years | Viet Nam |
| 2000s | 6 years | 7 years | 1 years | Viet Nam |
| 2010s | 6.8 years | 7 years | 0.2 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, Tonga or Viet Nam?
- Tonga, at 7 years against 7 years in Viet Nam as of 2025.
- What is the difference in theoretical duration of secondary education between Tonga and Viet Nam?
- 0 years, with Tonga ahead.
- How many years of comparable data are there for Tonga and Viet Nam?
- 56 years are reported by both, from 1970 to 2025.
- How do Tonga and Viet Nam rank globally for theoretical duration of secondary education?
- Tonga 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