Educational attainment rate, completed lower secondary education or in Tonga
Tonga: Educational attainment rate, completed lower secondary education or was 0.988 GPIA in 2021. ▲ Rising
Educational attainment rate, completed lower secondary education or in Tonga, 1996–2021
Source: UNESCO Institute for Statistics. Measured in GPIA.
Analysis
Tonga recorded 0.988 GPIA for educational attainment rate, completed lower secondary education or in 2021.
Compared with earlier readings it is down 1.6% on the previous year and up 1.3% over ten years.
Over the whole period, educational attainment rate, completed lower secondary education or in Tonga peaked at 1 GPIA in 2018 and was at its lowest, 0.95 GPIA, in 2006.
That places Tonga 35th out of 97 countries with data for 2021, putting it in the middle of the range.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 0.9518 GPIA | 0.9518 GPIA | 0.9518 GPIA | 1 |
| 2000s | 0.95 GPIA | 0.95 GPIA | 0.95 GPIA | 1 |
| 2010s | 0.9895 GPIA | 0.9755 GPIA | 1 GPIA | 2 |
| 2020s | 0.988 GPIA | 0.988 GPIA | 0.988 GPIA | 1 |
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)
- Primary secondary enrollment completion rates, gaps filled 108.79 (2024)
- School enrollment, primary 108.8% (2024)
Frequently asked questions
- What is educational attainment rate, completed lower secondary education or in Tonga?
- Educational attainment rate, completed lower secondary education or in Tonga was 0.988 GPIA in 2021, according to UNESCO Institute for Statistics.
- What is the highest educational attainment rate, completed lower secondary education or recorded in Tonga?
- The highest recorded value was 1 GPIA in 2018.
- What is the lowest educational attainment rate, completed lower secondary education or recorded in Tonga?
- The lowest recorded value was 0.95 GPIA in 2006.
- How does Tonga rank for educational attainment rate, completed lower secondary education or?
- Tonga ranks 35th out of 97 countries with data for 2021.
- Is educational attainment rate, completed lower secondary education or rising or falling in Tonga?
- Over the last ten years it is up 1.3%. 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 Educational attainment rate, completed lower secondary education or higher, population 25+ years, urban, adjusted gender parity index (GPIA). Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 5 observations, free to reuse under CC BY-SA 3.0 IGO (UNESCO Institute for Statistics).
About this data
February 2026 Data Release