School life expectancy, post-secondary … post-secondary adjusted in Tonga
Tonga: School life expectancy, post-secondary … post-secondary adjusted was 1.52 GPIA in 2023. ▼ Falling
School life expectancy, post-secondary non-tertiary, adjusted gender in Tonga, 1998–2023
Source: UNESCO Institute for Statistics. Measured in GPIA.
Analysis
In 2023, school life expectancy, post-secondary non-tertiary, adjusted gender in Tonga stood at 1.52 GPIA.
Compared with earlier readings it is up 26.2% on the previous year and up 48.1% over ten years.
Over the whole period, school life expectancy, post-secondary non-tertiary, adjusted gender in Tonga peaked at 1.59 GPIA in 1999 and was at its lowest, 0.8768 GPIA, in 2021.
That places Tonga 17th out of 125 countries with data for 2023, putting it in the top quarter.
The long-run direction has been consistently falling across the 16 years of available data.
School life expectancy, post-secondary … post-secondary adjusted in Tonga, year by year
| Year | GPIA | Change |
|---|---|---|
| 1998 | 1.39 GPIA | — |
| 1999 | 1.59 GPIA | +14.5% |
| 2000 | 1.35 GPIA | -14.5% |
| 2001 | 1.33 GPIA | -1.9% |
| 2002 | 1.34 GPIA | +0.9% |
| 2003 | 1.19 GPIA | -11.5% |
| 2004 | 1.24 GPIA | +4.5% |
| 2005 | 1.15 GPIA | -7.1% |
| 2006 | 1.28 GPIA | +11.0% |
| 2015 | 1.02 GPIA | -20.0% |
| 2018 | 1.15 GPIA | +12.8% |
| 2019 | 1.19 GPIA | +3.1% |
| 2020 | 1.33 GPIA | +11.7% |
| 2021 | 0.8768 GPIA | -34.0% |
| 2022 | 1.2 GPIA | +37.0% |
| 2023 | 1.52 GPIA | +26.2% |
Tonga compared with similar countries
- Tonga's 1.52 GPIA is above the median for upper middle income countries, which is 1.08 GPIA, 1.4× the median. (34 countries reporting)
- Tonga's 1.52 GPIA is above the median for East Asia & Pacific, which is 0.9302 GPIA, 1.6× the median. (18 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 1.49 GPIA | 1.39 GPIA | 1.59 GPIA | 2 |
| 2000s | 1.27 GPIA | 1.15 GPIA | 1.35 GPIA | 7 |
| 2010s | 1.12 GPIA | 1.02 GPIA | 1.19 GPIA | 3 |
| 2020s | 1.23 GPIA | 0.8768 GPIA | 1.52 GPIA | 4 |
Countries ranked near Tonga
- 14 Georgia 1.55 GPIA compare
- 15 Montserrat 1.55 GPIA compare
- 16 Saint Vincent and the Grenadines 1.53 GPIA compare
- 18 Dominica 1.5 GPIA compare
- 19 South Africa 1.5 GPIA compare
- 20 Seychelles 1.49 GPIA compare
More education data for Tonga
- Gender gap education levels, gaps filled 87.87 (1999)
- Primary enrollment selected countries, gaps filled 98.13 (2023)
- Teachers in secondary education, both sexes (number), gaps filled 1,086 (2015)
- Repeaters in primary education, all grades, both sexes (number), gaps 20 (2024)
- Enrolment in pre-primary education, male (number), gaps filled 1,228 (2024)
- Enrolment in pre-primary education, female (number), gaps filled 1,164 (2024)
- Secondary education, pupils, gaps filled 16,132 (2024)
- Primary education, duration (years), annual growth rate 0 % change on previous year (2025)
- Primary education, pupils, gaps filled 15,644 (2024)
- Primary education, pupils, annual growth rate -2.92 % change on previous year (2024)
Frequently asked questions
- What is school life expectancy, post-secondary non-tertiary, adjusted gender in Tonga?
- School life expectancy, post-secondary non-tertiary, adjusted gender in Tonga was 1.52 GPIA in 2023, according to UNESCO Institute for Statistics.
- What is the highest school life expectancy, post-secondary non-tertiary, adjusted gender recorded in Tonga?
- The highest recorded value was 1.59 GPIA in 1999.
- What is the lowest school life expectancy, post-secondary non-tertiary, adjusted gender recorded in Tonga?
- The lowest recorded value was 0.8768 GPIA in 2021.
- How does Tonga rank for school life expectancy, post-secondary non-tertiary, adjusted gender?
- Tonga ranks 17th out of 125 countries with data for 2023.
- Is school life expectancy, post-secondary non-tertiary, adjusted gender rising or falling in Tonga?
- Over the last ten years it is up 48.1%. The long-run trend across the full record is falling.
- Where does this Tonga data come from?
- The figures come from UNESCO Institute for Statistics, published as part of School life expectancy, post-secondary non-tertiary, adjusted gender parity index (GPIA). Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 16 observations, free to reuse under CC BY-SA 3.0 IGO (UNESCO Institute for Statistics).
About this data
February 2026 Data Release