Chad vs Sao Tome and Principe: Preprimary education, duration
Chad
3 years
in 2025
Sao Tome and Principe
3 years
in 2025
Chad rank
104th
Sao Tome and Principe rank
104th
Preprimary education, duration over time
- Chad
- Sao Tome and Principe
How they compare
Chad currently reports 3 years against 3 years in Sao Tome and Principe, a difference of 0 years.
Across all 27 years both countries report, Sao Tome and Principe has been ahead every year.
Chad ranks 104th and Sao Tome and Principe ranks 104th of 202 countries.
Sao Tome and Principe has averaged higher in every one of the 4 decades both report.
Head to head by decade
| Decade | Chad | Sao Tome and Principe | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 3 years | 4 years | 1 years | Sao Tome and Principe |
| 2000s | 3 years | 5 years | 2 years | Sao Tome and Principe |
| 2010s | 3 years | 3.2 years | 0.2 years | Sao Tome and Principe |
| 2020s | 3 years | 3 years | 0 years | — |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher preprimary education, duration, Chad or Sao Tome and Principe?
- Chad, at 3 years against 3 years in Sao Tome and Principe as of 2025.
- What is the difference in preprimary education, duration 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?
- 27 years are reported by both, from 1999 to 2025.
- How do Chad and Sao Tome and Principe rank globally for preprimary education, duration?
- Chad ranks 104th and Sao Tome and Principe ranks 104th of 202 countries.
- Where does this data come from?
- Data API, UN Educational, Scientific and Cultural Organization (UNESCO), published as Preprimary education, duration (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Preprimary duration refers to the number of grades (years) in preprimary school.