School life expectancy, pre-primary, both sexes (years) (expectancy) in Tonga
Tonga: School life expectancy, pre-primary, both sexes (years) (expectancy) was 1.05 years in 2024. ▲ Rising
School life expectancy, pre-primary, both sexes in Tonga, 1975–2024
Source: UNESCO Institute for Statistics. Measured in years.
Analysis
Tonga recorded 1.05 years for school life expectancy, pre-primary, both sexes in 2024.
Compared with earlier readings it is down 2.4% on the previous year and up 23.1% over ten years.
Over the whole period, school life expectancy, pre-primary, both sexes in Tonga peaked at 1.19 years in 2021 and was at its lowest, 0.1891 years, in 1975.
Tonga ranks 159th of 213 countries on this measure, in the middle of the range.
The long-run direction has been consistently rising across the 14 years of available data.
School life expectancy, pre-primary, both sexes (years) (expectancy) in Tonga, year by year
| Year | years | Change |
|---|---|---|
| 1975 | 0.1891 years | — |
| 1998 | 0.4037 years | +113.5% |
| 1999 | 0.5549 years | +37.5% |
| 2004 | 0.408 years | -26.5% |
| 2012 | 0.7834 years | +92.0% |
| 2014 | 0.852 years | +8.7% |
| 2015 | 0.9345 years | +9.7% |
| 2018 | 0.932 years | -0.3% |
| 2019 | 1.04 years | +11.3% |
| 2020 | 1.07 years | +2.8% |
| 2021 | 1.19 years | +11.3% |
| 2022 | 1.18 years | -0.9% |
| 2023 | 1.07 years | -8.7% |
| 2024 | 1.05 years | -2.4% |
Tonga compared with similar countries
- Tonga's 1.05 years is below the median for upper middle income countries, which is 1.76 years, 60% of the median. (58 countries reporting)
- Tonga's 1.05 years is below the median for East Asia & Pacific, which is 1.98 years, 53% of the median. (34 countries reporting)
Biggest year-on-year movements
Years where School life expectancy, pre-primary, both sexes (years) (expectancy) in Tonga changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1998 | +113.5% | 0.1891 years | 0.4037 years |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 0.1891 years | 0.1891 years | 0.1891 years | 1 |
| 1990s | 0.4793 years | 0.4037 years | 0.5549 years | 2 |
| 2000s | 0.408 years | 0.408 years | 0.408 years | 1 |
| 2010s | 0.9079 years | 0.7834 years | 1.04 years | 5 |
| 2020s | 1.11 years | 1.05 years | 1.19 years | 5 |
Countries ranked near Tonga
More education data for Tonga
- 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)
- Primary education, pupils, per unit of GDP 0 units per US$ of GDP (2024)
- Primary education, pupils, per capita 0.1502 units per person (2024)
Frequently asked questions
- What is school life expectancy, pre-primary, both sexes in Tonga?
- School life expectancy, pre-primary, both sexes in Tonga was 1.05 years in 2024, according to UNESCO Institute for Statistics.
- What is the highest school life expectancy, pre-primary, both sexes recorded in Tonga?
- The highest recorded value was 1.19 years in 2021.
- What is the lowest school life expectancy, pre-primary, both sexes recorded in Tonga?
- The lowest recorded value was 0.1891 years in 1975.
- How does Tonga rank for school life expectancy, pre-primary, both sexes?
- Tonga ranks 159th out of 213 countries with data for 2024.
- Is school life expectancy, pre-primary, both sexes rising or falling in Tonga?
- Over the last ten years it is up 23.1%. The long-run trend across the full record is rising.
- Where does this Tonga data come from?
- The figures come from UNESCO Institute for Statistics, published as part of School life expectancy, pre-primary, both sexes (years). Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 14 observations, free to reuse under CC BY-SA 3.0 IGO (UNESCO Institute for Statistics).
About this data
February 2026 Data Release