Chad vs Sao Tome and Principe: Theoretical duration of primary education
Chad
6 years
in 2025
Sao Tome and Principe
6 years
in 2025
Chad rank
29th
Sao Tome and Principe rank
29th
Theoretical duration of primary education over time
- Chad
- Sao Tome and Principe
How they compare
Chad currently reports 6 years against 6 years in Sao Tome and Principe, a difference of 0 years.
The two have swapped places 1 time across 56 shared years of data; in 1970 it was Chad ahead.
Chad ranks 29th and Sao Tome and Principe ranks 29th of 224 countries.
Chad has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | Chad | Sao Tome and Principe | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 6 years | 4 years | 2 years | Chad |
| 1980s | 6 years | 4 years | 2 years | Chad |
| 1990s | 6 years | 4.2 years | 1.8 years | Chad |
| 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, Chad or Sao Tome and Principe?
- Chad, at 6 years against 6 years in Sao Tome and Principe as of 2025.
- What is the difference in theoretical duration of primary education between Chad and Sao Tome and Principe?
- 0 years, with Chad ahead.
- How many years of comparable data are there for Chad and Sao Tome and Principe?
- 56 years are reported by both, from 1970 to 2025.
- How do Chad and Sao Tome and Principe rank globally for theoretical duration of primary education?
- Chad ranks 29th and Sao Tome and Principe 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