Middle income vs Tonga: School life expectancy, tertiary, gender parity index

Middle income
1.13 GPI
in 2019
Tonga
1.66 GPI
in 2003
Middle income rank
20th
Tonga rank
23rd

School life expectancy, tertiary, gender parity index over time

  • Middle income
  • Tonga
00.511.5197019942019

How they compare

Tonga currently reports 1.66 GPI against 1.13 GPI in Middle income, a difference of 0.53 GPI.

That makes Tonga's figure about 1.5 times Middle income's.

The two have swapped places 2 times across 8 shared years of data; in 1978 it was Tonga ahead.

Middle income ranks 20th and Tonga ranks 23rd of 43 groups.

Across the 4 decades both report, Middle income averaged higher in 1 and Tonga in 3.

Head to head by decade

Decade Middle income Tonga Difference Ahead
1970s 0.8132 GPI 0.7832 GPI 0.03 GPI Middle income
1980s 0.7837 GPI 1.21 GPI 0.4262 GPI Tonga
1990s 0.9094 GPI 1.35 GPI 0.439 GPI Tonga
2000s 0.9505 GPI 1.67 GPI 0.7199 GPI Tonga

Averages of every year both report within each decade.

Frequently asked questions

Which has higher school life expectancy, tertiary, gender parity index, Middle income or Tonga?
Tonga, at 1.66 GPI against 1.13 GPI in Middle income as of 2003.
What is the difference in school life expectancy, tertiary, gender parity index between Middle income and Tonga?
0.53 GPI, with Tonga ahead.
How many years of comparable data are there for Middle income and Tonga?
8 years are reported by both, from 1978 to 2003.
How do Middle income and Tonga rank globally for school life expectancy, tertiary, gender parity index?
Middle income ranks 20th and Tonga ranks 23rd of 43 groups.
Where does this data come from?
UNESCO Institute for Statistics, published as School life expectancy, tertiary, gender parity index (GPI). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Middle income vs Tonga: School life expectancy, tertiary, gender parity index. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 28 August 2026, from https://education.statizoid.com/compare/school-life-expectancy-tertiary-gender-parity-index-gpi/middle-income/tonga/

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About this data

Indicator
School life expectancy, tertiary, gender parity index (GPI)
Unit
GPI
Source
UNESCO Institute for Statistics
Licence
CC BY 4.0 (World Bank Open Data)
Coverage
222 places, 6,910 data points, 1970–2020
Last refreshed

Ratio of female school life expectancy to the male school life expectancy. It is calculated by dividing the female value for the indicator by the male value for the indicator. A GPI equal to 1 indicates parity between females and males. In general, a value less than 1 indicates disparity in favor of males and a value greater than 1 indicates disparity in favor of females.