School life expectancy, primary to tertiary, both sexes in Tonga
Tonga: School life expectancy, primary to tertiary, both sexes was 18.18 years in 2023. β² Rising
School life expectancy, primary to tertiary, both sexes in Tonga, 1970β2023
Source: UNESCO Institute for Statistics. Measured in years.
Analysis
Tonga recorded 18.18 years for school life expectancy, primary to tertiary, both sexes in 2023. That is the highest value across all 12 years on record.
Compared with earlier readings it is up 3.7% on the previous year and up 3.7% over five years.
Over the whole period, school life expectancy, primary to tertiary, both sexes in Tonga peaked at 18.18 years in 2023 and was at its lowest, 11.98 years, in 1978.
Tonga ranks 15th of 185 countries on this measure, in the top 10%.
The long-run direction has been consistently rising across the 12 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 12.19 years | 11.98 years | 12.39 years | 2 |
| 1980s | 12.92 years | 12.77 years | 13.05 years | 3 |
| 1990s | 13.26 years | 13.26 years | 13.26 years | 1 |
| 2000s | 13.47 years | 13.02 years | 14.13 years | 4 |
| 2020s | 17.86 years | 17.53 years | 18.18 years | 2 |
Countries ranked near Tonga
More education data for Tonga
- Primary education, teachers, gaps filled 818 (2024)
- Duration of pre primary education, annual growth rate 0 % change on previous year (2025)
- Duration of pre primary education 2 (2025)
- Official entrance age to pre primary education 4 (2025)
- Population ages 15-64 58.2% (2025)
- Population ages 0-14 34.9% (2025)
- Lower secondary school starting age 12 years (2025)
- Primary school starting age 6 years (2025)
- School enrollment, primary 108.8% (2024)
- Primary education, teachers, per capita 0.0079 units per person (2024)
Frequently asked questions
- What is school life expectancy, primary to tertiary, both sexes in Tonga?
- School life expectancy, primary to tertiary, both sexes in Tonga was 18.18 years in 2023, according to UNESCO Institute for Statistics.
- What is the highest school life expectancy, primary to tertiary, both sexes recorded in Tonga?
- The highest recorded value was 18.18 years in 2023.
- What is the lowest school life expectancy, primary to tertiary, both sexes recorded in Tonga?
- The lowest recorded value was 11.98 years in 1978.
- How does Tonga rank for school life expectancy, primary to tertiary, both sexes?
- Tonga ranks 15th out of 185 countries with data for 2023.
- Where does this Tonga data come from?
- The figures come from UNESCO Institute for Statistics, published as part of School life expectancy, primary to tertiary, both sexes (years). Statizoid updates them automatically from the source API.
Download this data
CSV Β· JSON β 12 observations, free to reuse under CC BY-SA 3.0 IGO (UNESCO Institute for Statistics).
About this data
February 2026 Data Release