Sudan vs Tonga: Theoretical duration of primary education (years)
Sudan
6 years
in 2025
Tonga
6 years
in 2025
Sudan rank
29th
Tonga rank
29th
Theoretical duration of primary education (years) over time
- Sudan
- Tonga
How they compare
Sudan currently reports 6 years against 6 years in Tonga, a difference of 0 years.
Across all 28 years both countries report, Tonga has been ahead every year.
Sudan ranks 29th and Tonga ranks 29th of 224 countries.
Head to head by decade
| Decade | Sudan | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 6 years | 6 years | 0 years | — |
| 2000s | 6 years | 6 years | 0 years | — |
| 2010s | 6 years | 6 years | 0 years | — |
| 2020s | 6 years | 6 years | 0 years | — |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher theoretical duration of primary education, Sudan or Tonga?
- Sudan, at 6 years against 6 years in Tonga as of 2025.
- What is the difference in theoretical duration of primary 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 theoretical duration of primary education?
- Sudan ranks 29th and Tonga ranks 29th of 224 countries.
- Where does this data come from?
- UNESCO Institute for Statistics, published as Theoretical duration of primary 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