Sudan vs Tonga: Official entrance age to pre-primary education
Sudan
4 years
in 2025
Tonga
4 years
in 2025
Sudan rank
14th
Tonga rank
14th
Official entrance age to pre-primary education over time
- Sudan
- Tonga
How they compare
Sudan currently reports 4 years against 4 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 14th and Tonga ranks 14th of 217 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 | 4 years | 3 years | 1 years | Sudan |
| 2000s | 4 years | 3 years | 1 years | Sudan |
| 2010s | 4 years | 3.8 years | 0.2 years | Sudan |
| 2020s | 4 years | 4 years | 0 years | — |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher official entrance age to pre-primary education, Sudan or Tonga?
- Sudan, at 4 years against 4 years in Tonga as of 2025.
- What is the difference in official entrance age to pre-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 official entrance age to pre-primary education?
- Sudan ranks 14th and Tonga ranks 14th of 217 countries.
- Where does this data come from?
- UNESCO Institute for Statistics, published as Official entrance age to pre-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