Papua New Guinea vs Tonga: Theoretical duration of lower secondary education
Papua New Guinea
4 years
in 2025
Tonga
4 years
in 2025
Papua New Guinea rank
17th
Tonga rank
17th
Theoretical duration of lower secondary education over time
- Papua New Guinea
- Tonga
How they compare
Papua New Guinea currently reports 4 years against 4 years in Tonga, a difference of 0 years.
Across all 56 years both countries report, Tonga has been ahead every year.
Papua New Guinea ranks 17th and Tonga ranks 17th of 215 countries.
Tonga has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | Papua New Guinea | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 2.2 years | 4 years | 1.8 years | Tonga |
| 1980s | 2 years | 4 years | 2 years | Tonga |
| 1990s | 2 years | 4 years | 2 years | Tonga |
| 2000s | 2 years | 4 years | 2 years | Tonga |
| 2010s | 2.4 years | 4.8 years | 2.4 years | Tonga |
| 2020s | 4 years | 4.5 years | 0.5 years | Tonga |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher theoretical duration of lower secondary education, Papua New Guinea or Tonga?
- Papua New Guinea, at 4 years against 4 years in Tonga as of 2025.
- What is the difference in theoretical duration of lower secondary education between Papua New Guinea and Tonga?
- 0 years, with Papua New Guinea ahead.
- How many years of comparable data are there for Papua New Guinea and Tonga?
- 56 years are reported by both, from 1970 to 2025.
- How do Papua New Guinea and Tonga rank globally for theoretical duration of lower secondary education?
- Papua New Guinea ranks 17th and Tonga ranks 17th of 215 countries.
- Where does this data come from?
- UNESCO Institute for Statistics, published as Theoretical duration of lower 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