Tonga vs UNESCO: Sids: School life expectancy, tertiary, adjusted gender parity index
Tonga
1.64 GPIA
in 2024
UNESCO: Sids
1.35 GPIA
in 2024
Tonga rank
7th
UNESCO: Sids rank
7th
School life expectancy, tertiary, adjusted gender parity index over time
- Tonga
- UNESCO: Sids
How they compare
Tonga currently reports 1.64 GPIA against 1.35 GPIA in UNESCO: Sids, a difference of 0.29 GPIA.
That makes Tonga's figure about 1.2 times UNESCO: Sids's.
The two have swapped places 3 times across 11 shared years of data; in 1978 it was UNESCO: Sids ahead.
Tonga ranks 7th and UNESCO: Sids ranks 7th of 191 countries.
Across the 5 decades both report, Tonga averaged higher in 3 and UNESCO: Sids in 2.
Head to head by decade
| Decade | Tonga | UNESCO: Sids | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 0.7555 GPIA | 1.11 GPIA | 0.358 GPIA | UNESCO: Sids |
| 1980s | 1.1 GPIA | 1.18 GPIA | 0.0794 GPIA | UNESCO: Sids |
| 1990s | 1.22 GPIA | 1.2 GPIA | 0.0217 GPIA | Tonga |
| 2000s | 1.4 GPIA | 1.23 GPIA | 0.164 GPIA | Tonga |
| 2020s | 1.49 GPIA | 1.35 GPIA | 0.1341 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, Tonga or UNESCO: Sids?
- Tonga, at 1.64 GPIA against 1.35 GPIA in UNESCO: Sids as of 2024.
- What is the difference in school life expectancy, tertiary, adjusted gender parity index between Tonga and UNESCO: Sids?
- 0.29 GPIA, with Tonga ahead.
- How many years of comparable data are there for Tonga and UNESCO: Sids?
- 11 years are reported by both, from 1978 to 2024.
- How do Tonga and UNESCO: Sids rank globally for school life expectancy, tertiary, adjusted gender parity index?
- Tonga ranks 7th and UNESCO: Sids ranks 7th of 191 countries.
- 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