Tanzania vs Tonga: Lower secondary school completion rates, adjusted gender parity index
Tanzania
1.12 index
in 2025
Tonga
1.11 index
in 2025
Tanzania rank
34th
Tonga rank
37th
Lower secondary school completion rates, adjusted gender parity index over time
- Tanzania
- Tonga
How they compare
Tanzania currently reports 1.12 index against 1.11 index in Tonga, a difference of 0.01 index.
The two have swapped places 1 time across 45 shared years of data; in 1981 it was Tonga ahead.
Tanzania ranks 34th and Tonga ranks 37th of 164 countries.
Tonga has averaged higher in every one of the 5 decades both report.
Head to head by decade
| Decade | Tanzania | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 0.3818 index | 1.05 index | 0.6651 index | Tonga |
| 1990s | 0.5895 index | 1.08 index | 0.4951 index | Tonga |
| 2000s | 0.6711 index | 1.11 index | 0.4408 index | Tonga |
| 2010s | 0.8881 index | 1.12 index | 0.2305 index | Tonga |
| 2020s | 1.1 index | 1.11 index | 0.0071 index | Tonga |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher lower secondary school completion rates, adjusted gender parity index, Tanzania or Tonga?
- Tanzania, at 1.12 index against 1.11 index in Tonga as of 2025.
- What is the difference in lower secondary school completion rates, adjusted gender parity index between Tanzania and Tonga?
- 0.01 index, with Tanzania ahead.
- How many years of comparable data are there for Tanzania and Tonga?
- 45 years are reported by both, from 1981 to 2025.
- How do Tanzania and Tonga rank globally for lower secondary school completion rates, adjusted gender parity index?
- Tanzania ranks 34th and Tonga ranks 37th of 164 countries.
- Where does this data come from?
- UNESCO Institute for Statistics (2026) – with minor processing by Our World in Data, published as Lower secondary school completion rates, adjusted gender parity index. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
An adjusted gender parity index of 1 indicates equal lower secondary school completion rates between boys and girls. Values below 1 favor boys, and values above 1 favor girls.