Saint Helena vs Tonga: Theoretical duration of upper secondary education (years)
Saint Helena
3 years
in 2025
Tonga
3 years
in 2025
Saint Helena rank
52nd
Tonga rank
52nd
Theoretical duration of upper secondary education (years) over time
- Saint Helena
- Tonga
How they compare
Saint Helena currently reports 3 years against 3 years in Tonga, a difference of 0 years.
The two have swapped places 2 times across 20 shared years of data; in 1989 it was Tonga ahead.
Saint Helena ranks 52nd and Tonga ranks 52nd of 221 countries.
Across the 4 decades both report, Saint Helena averaged higher in 2 and Tonga in 2.
Head to head by decade
| Decade | Saint Helena | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 2 years | 3 years | 1 years | Tonga |
| 1990s | 2.2 years | 2.8 years | 0.6 years | Tonga |
| 2010s | 3 years | 2 years | 1 years | Saint Helena |
| 2020s | 3 years | 2.5 years | 0.5 years | Saint Helena |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher theoretical duration of upper secondary education, Saint Helena or Tonga?
- Saint Helena, at 3 years against 3 years in Tonga as of 2025.
- What is the difference in theoretical duration of upper secondary education between Saint Helena and Tonga?
- 0 years, with Saint Helena ahead.
- How many years of comparable data are there for Saint Helena and Tonga?
- 20 years are reported by both, from 1989 to 2025.
- How do Saint Helena and Tonga rank globally for theoretical duration of upper secondary education?
- Saint Helena ranks 52nd and Tonga ranks 52nd of 221 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