Upper secondary completion rate, adjusted gender parity index in Tonga
Tonga: Upper secondary completion rate, adjusted gender parity index was 1.14 index in 2025. ▲ Rising
Upper secondary completion rate, adjusted gender parity index in Tonga, 1981–2025
Source: UNESCO Institute for Statistics (2026) – with minor processing by Our World in Data. Measured in index.
Analysis
Tonga recorded 1.14 index for upper secondary completion rate, adjusted gender parity index in 2025.
That represents a change of down 0.1% on the previous year and up 0.2% over ten years.
Over the whole period, upper secondary completion rate, adjusted gender parity index in Tonga peaked at 1.15 index in 2020 and was at its lowest, 1.01 index, in 1981.
Tonga ranks 45th of 164 countries on this measure, in the middle of the range.
The long-run direction has been consistently rising across the 45 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 1.04 index | 1.01 index | 1.07 index | 9 |
| 1990s | 1.1 index | 1.07 index | 1.11 index | 10 |
| 2000s | 1.13 index | 1.12 index | 1.14 index | 10 |
| 2010s | 1.14 index | 1.14 index | 1.15 index | 10 |
| 2020s | 1.15 index | 1.14 index | 1.15 index | 6 |
Countries ranked near Tonga
More gender data for Tonga
- Age population, age 00, female, interpolated 1,112 (2025)
- Age population, age 00, male, interpolated 1,200 (2025)
- Age population, age 01, female, interpolated 1,106 (2025)
- Age population, age 01, male, interpolated 1,195 (2025)
- Age population, age 02, female, interpolated 1,110 (2025)
- Age population, age 02, male, interpolated 1,200 (2025)
- Age population, age 03, female, interpolated 1,117 (2025)
- Age population, age 03, male, interpolated 1,209 (2025)
- Age population, age 04, female, interpolated 1,105 (2025)
- Age population, age 04, male, interpolated 1,195 (2025)
Frequently asked questions
- What is upper secondary completion rate, adjusted gender parity index in Tonga?
- Upper secondary completion rate, adjusted gender parity index in Tonga was 1.14 index in 2025, according to UNESCO Institute for Statistics (2026) – with minor processing by Our World in Data.
- What is the highest upper secondary completion rate, adjusted gender parity index recorded in Tonga?
- The highest recorded value was 1.15 index in 2020.
- What is the lowest upper secondary completion rate, adjusted gender parity index recorded in Tonga?
- The lowest recorded value was 1.01 index in 1981.
- How does Tonga rank for upper secondary completion rate, adjusted gender parity index?
- Tonga ranks 45th out of 164 countries with data for 2025.
- Is upper secondary completion rate, adjusted gender parity index rising or falling in Tonga?
- Over the last ten years it is up 0.2%. 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 (2026) – with minor processing by Our World in Data, published as part of Upper secondary completion rate, adjusted gender parity index. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 45 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
An adjusted gender parity index of 1 indicates equal upper secondary school completion rates between boys and girls. Values below 1 favor boys, and values above 1 favor girls.