Oman vs Tonga: Official entrance age to upper secondary education
Oman
16 years
in 2025
Tonga
16 years
in 2025
Oman rank
10th
Tonga rank
10th
Official entrance age to upper secondary education over time
- Oman
- Tonga
How they compare
Oman currently reports 16 years against 16 years in Tonga, a difference of 0 years.
Across all 56 years both countries report, Tonga has been ahead every year.
Oman ranks 10th and Tonga ranks 10th of 215 countries.
Tonga has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | Oman | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 15 years | 16 years | 1 years | Tonga |
| 1980s | 15 years | 15.4 years | 0.4 years | Tonga |
| 1990s | 15 years | 15 years | 0 years | — |
| 2000s | 15 years | 15 years | 0 years | — |
| 2010s | 15.2 years | 16.6 years | 1.4 years | Tonga |
| 2020s | 16 years | 16.5 years | 0.5 years | Tonga |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher official entrance age to upper secondary education, Oman or Tonga?
- Oman, at 16 years against 16 years in Tonga as of 2025.
- What is the difference in official entrance age to upper secondary education between Oman and Tonga?
- 0 years, with Oman ahead.
- How many years of comparable data are there for Oman and Tonga?
- 56 years are reported by both, from 1970 to 2025.
- How do Oman and Tonga rank globally for official entrance age to upper secondary education?
- Oman ranks 10th and Tonga ranks 10th of 215 countries.
- Where does this data come from?
- UNESCO Institute for Statistics, published as Official entrance age to 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