Mean years of schooling (ISCED 1 or higher), population 25+ years in Tonga
Tonga: Mean years of schooling (ISCED 1 or higher), population 25+ years was 11.1 in 2023. ▲ Rising
Mean years of schooling (ISCED 1 or higher), population 25+ years in Tonga, 1986–2023
Source: UNESCO Institute for Statistics.
Analysis
The most recent figure for mean years of schooling (isced 1 or higher), population 25+ years in Tonga is 11.1, measured in 2023. That is the highest value across all 6 years on record.
Compared with earlier readings it is up 1.7% over ten years.
Over the whole period, mean years of schooling (isced 1 or higher), population 25+ years in Tonga peaked at 11.1 in 2023 and was at its lowest, 7.76, in 1986.
That places Tonga 54th out of 124 countries with data for 2023, putting it in the middle of the range.
Mean years of schooling (ISCED 1 or higher), population 25+ years in Tonga, year by year
| Year | Value | Change |
|---|---|---|
| 1986 | 7.76 | — |
| 1996 | 10.03 | +29.2% |
| 2006 | 10.07 | +0.4% |
| 2011 | 10.92 | +8.4% |
| 2019 | 10.85 | -0.6% |
| 2023 | 11.1 | +2.3% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 7.76 | 7.76 | 7.76 | 1 |
| 1990s | 10.03 | 10.03 | 10.03 | 1 |
| 2000s | 10.07 | 10.07 | 10.07 | 1 |
| 2010s | 10.88 | 10.85 | 10.92 | 2 |
| 2020s | 11.1 | 11.1 | 11.1 | 1 |
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 mean years of schooling (isced 1 or higher), population 25+ years in Tonga?
- Mean years of schooling (isced 1 or higher), population 25+ years in Tonga was 11.1 in 2023, according to UNESCO Institute for Statistics.
- What is the highest mean years of schooling (isced 1 or higher), population 25+ years recorded in Tonga?
- The highest recorded value was 11.1 in 2023.
- What is the lowest mean years of schooling (isced 1 or higher), population 25+ years recorded in Tonga?
- The lowest recorded value was 7.76 in 1986.
- How does Tonga rank for mean years of schooling (isced 1 or higher), population 25+ years?
- Tonga ranks 54th out of 124 countries with data for 2023.
- Is mean years of schooling (isced 1 or higher), population 25+ years rising or falling in Tonga?
- Over the last ten years it is up 1.7%. 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 Mean years of schooling (ISCED 1 or higher), population 25+ years, both sexes. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 6 observations, free to reuse under CC BY-SA 3.0 IGO (UNESCO Institute for Statistics).
About this data
February 2026 Data Release