Nauru vs Tonga: School life expectancy, primary, adjusted gender parity index (GPIA)
Nauru
1.04 GPIA
in 2025
Tonga
1.04 GPIA
in 2024
Nauru rank
13th
Tonga rank
16th
School life expectancy, primary, adjusted gender parity index (GPIA) over time
- Nauru
- Tonga
How they compare
Nauru currently reports 1.04 GPIA against 1.04 GPIA in Tonga, a difference of 0 GPIA.
The two have swapped places 12 times across 23 shared years of data; in 1971 it was Nauru ahead.
Nauru ranks 13th and Tonga ranks 16th of 215 countries.
Across the 6 decades both report, Nauru averaged higher in 5 and Tonga in 1.
Head to head by decade
| Decade | Nauru | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 0.986 GPIA | 0.9538 GPIA | 0.0321 GPIA | Nauru |
| 1980s | 0.8825 GPIA | 0.9995 GPIA | 0.117 GPIA | Tonga |
| 1990s | 1.03 GPIA | 0.9563 GPIA | 0.0719 GPIA | Nauru |
| 2000s | 1.04 GPIA | 0.989 GPIA | 0.0527 GPIA | Nauru |
| 2010s | 1.01 GPIA | 1.01 GPIA | 0.0025 GPIA | Nauru |
| 2020s | 1.05 GPIA | 1.02 GPIA | 0.0306 GPIA | Nauru |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher school life expectancy, primary, adjusted gender parity index, Nauru or Tonga?
- Nauru, at 1.04 GPIA against 1.04 GPIA in Tonga as of 2025.
- What is the difference in school life expectancy, primary, adjusted gender parity index between Nauru and Tonga?
- 0 GPIA, with Nauru ahead.
- How many years of comparable data are there for Nauru and Tonga?
- 23 years are reported by both, from 1971 to 2024.
- How do Nauru and Tonga rank globally for school life expectancy, primary, adjusted gender parity index?
- Nauru ranks 13th and Tonga ranks 16th of 215 countries.
- Where does this data come from?
- UNESCO Institute for Statistics, published as School life expectancy, primary, adjusted gender parity index (GPIA). Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
February 2026 Data Release