SDG: Small Island Developing States vs Tonga: School life expectancy, tertiary, adjusted gender parity index
SDG: Small Island Developing States
1.35 GPIA
in 2024
Tonga
1.64 GPIA
in 2024
SDG: Small Island Developing States rank
6th
Tonga rank
7th
School life expectancy, tertiary, adjusted gender parity index over time
- SDG: Small Island Developing States
- Tonga
How they compare
Tonga currently reports 1.64 GPIA against 1.35 GPIA in SDG: Small Island Developing States, a difference of 0.29 GPIA.
That makes Tonga's figure about 1.2 times SDG: Small Island Developing States's.
The two have swapped places 5 times across 11 shared years of data; in 1978 it was SDG: Small Island Developing States ahead.
SDG: Small Island Developing States ranks 6th and Tonga ranks 7th of 221 groups.
Across the 5 decades both report, SDG: Small Island Developing States averaged higher in 3 and Tonga in 2.
Head to head by decade
| Decade | SDG: Small Island Developing States | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 1.2 GPIA | 0.7555 GPIA | 0.4453 GPIA | SDG: Small Island Developing States |
| 1980s | 1.23 GPIA | 1.1 GPIA | 0.1367 GPIA | SDG: Small Island Developing States |
| 1990s | 1.24 GPIA | 1.22 GPIA | 0.018 GPIA | SDG: Small Island Developing States |
| 2000s | 1.26 GPIA | 1.4 GPIA | 0.1358 GPIA | Tonga |
| 2020s | 1.35 GPIA | 1.49 GPIA | 0.1343 GPIA | Tonga |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher school life expectancy, tertiary, adjusted gender parity index, SDG: Small Island Developing States or Tonga?
- Tonga, at 1.64 GPIA against 1.35 GPIA in SDG: Small Island Developing States as of 2024.
- What is the difference in school life expectancy, tertiary, adjusted gender parity index between SDG: Small Island Developing States and Tonga?
- 0.29 GPIA, with Tonga ahead.
- How many years of comparable data are there for SDG: Small Island Developing States and Tonga?
- 11 years are reported by both, from 1978 to 2024.
- How do SDG: Small Island Developing States and Tonga rank globally for school life expectancy, tertiary, adjusted gender parity index?
- SDG: Small Island Developing States ranks 6th and Tonga ranks 7th of 221 groups.
- Where does this data come from?
- UNESCO Institute for Statistics, published as School life expectancy, tertiary, 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