Sudan vs Tonga: Official entrance age to lower secondary education
Sudan
12 years
in 2025
Tonga
12 years
in 2025
Sudan rank
30th
Tonga rank
30th
Official entrance age to lower secondary education over time
- Sudan
- Tonga
How they compare
Sudan currently reports 12 years against 12 years in Tonga, a difference of 0 years.
The two have swapped places 1 time across 28 shared years of data; in 1998 it was Sudan ahead.
Sudan ranks 30th and Tonga ranks 30th of 215 countries.
Sudan has averaged higher in every one of the 4 decades both report.
Head to head by decade
| Decade | Sudan | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 12 years | 11 years | 1 years | Sudan |
| 2000s | 12 years | 11 years | 1 years | Sudan |
| 2010s | 12 years | 11.8 years | 0.2 years | Sudan |
| 2020s | 12 years | 12 years | 0 years | — |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher official entrance age to lower secondary education, Sudan or Tonga?
- Sudan, at 12 years against 12 years in Tonga as of 2025.
- What is the difference in official entrance age to lower secondary education between Sudan and Tonga?
- 0 years, with Sudan ahead.
- How many years of comparable data are there for Sudan and Tonga?
- 28 years are reported by both, from 1998 to 2025.
- How do Sudan and Tonga rank globally for official entrance age to lower secondary education?
- Sudan ranks 30th and Tonga ranks 30th of 215 countries.
- Where does this data come from?
- UNESCO Institute for Statistics, published as Official entrance age to 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