Sao Tome and Principe vs Tonga: Theoretical duration of primary education
Sao Tome and Principe
6 years
in 2025
Tonga
6 years
in 2025
Sao Tome and Principe rank
29th
Tonga rank
29th
Theoretical duration of primary education over time
- Sao Tome and Principe
- Tonga
How they compare
Sao Tome and Principe currently reports 6 years against 6 years in Tonga, a difference of 0 years.
Across all 56 years both countries report, Tonga has been ahead every year.
Sao Tome and Principe ranks 29th and Tonga ranks 29th of 224 countries.
Tonga has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | Sao Tome and Principe | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 4 years | 6 years | 2 years | Tonga |
| 1980s | 4 years | 6 years | 2 years | Tonga |
| 1990s | 4.2 years | 6 years | 1.8 years | Tonga |
| 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, Sao Tome and Principe or Tonga?
- Sao Tome and Principe, at 6 years against 6 years in Tonga as of 2025.
- What is the difference in theoretical duration of primary education between Sao Tome and Principe and Tonga?
- 0 years, with Sao Tome and Principe ahead.
- How many years of comparable data are there for Sao Tome and Principe and Tonga?
- 56 years are reported by both, from 1970 to 2025.
- How do Sao Tome and Principe and Tonga rank globally for theoretical duration of primary education?
- Sao Tome and Principe 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