Grenada vs Tonga: Theoretical duration of pre-primary education
Grenada
2 years
in 2025
Tonga
2 years
in 2025
Grenada rank
146th
Tonga rank
146th
Theoretical duration of pre-primary education over time
- Grenada
- Tonga
How they compare
Grenada currently reports 2 years against 2 years in Tonga, a difference of 0 years.
Across all 56 years both countries report, Tonga has been ahead every year.
Grenada ranks 146th and Tonga ranks 146th of 217 countries.
Tonga has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | Grenada | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 2 years | 3 years | 1 years | Tonga |
| 1980s | 2 years | 2.4 years | 0.4 years | Tonga |
| 1990s | 2 years | 2 years | 0 years | β |
| 2000s | 2 years | 2 years | 0 years | β |
| 2010s | 2 years | 2 years | 0 years | β |
| 2020s | 2 years | 2 years | 0 years | β |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher theoretical duration of pre-primary education, Grenada or Tonga?
- Grenada, at 2 years against 2 years in Tonga as of 2025.
- What is the difference in theoretical duration of pre-primary education between Grenada and Tonga?
- 0 years, with Grenada ahead.
- How many years of comparable data are there for Grenada and Tonga?
- 56 years are reported by both, from 1970 to 2025.
- How do Grenada and Tonga rank globally for theoretical duration of pre-primary education?
- Grenada ranks 146th and Tonga ranks 146th of 217 countries.
- Where does this data come from?
- UNESCO Institute for Statistics, published as Theoretical duration of 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