How many years of comparable data are there for Iceland and Tonga?

6 years are reported by both, from 1998 to 2015.

Where does this data come from?

UNESCO Institute for Statistics, published as Out-of-school rate for adolescents and youth of lower and upper secondary school age, adjusted gender parity index (GPIA). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Iceland vs Tonga: Out-of-school rate for adolescents and youth of lower and upper

Iceland

0.735 GPIA

in 2018

Tonga

0.7593 GPIA

in 2015

Iceland rank

99th

Tonga rank

96th

Out-of-school rate for adolescents and youth of lower and upper over time

Iceland
Tonga

How they compare

Tonga currently reports 0.7593 GPIA against 0.735 GPIA in Iceland, a difference of 0.0243 GPIA.

The two have swapped places 2 times across 6 shared years of data; in 1998 it was Iceland ahead.

Iceland ranks 99th and Tonga ranks 96th of 137 countries.

Iceland has averaged higher in every one of the 3 decades both report.

Head to head by decade

Decade	Iceland	Tonga	Difference	Ahead
1990s	0.8835 GPIA	0.4028 GPIA	0.4807 GPIA	Iceland
2000s	0.8064 GPIA	0.698 GPIA	0.1084 GPIA	Iceland
2010s	0.8245 GPIA	0.7504 GPIA	0.0741 GPIA	Iceland

Averages of every year both report within each decade.

Frequently asked questions

Which has higher out-of-school rate for adolescents and youth of lower and upper, Iceland or Tonga?: Tonga, at 0.7593 GPIA against 0.735 GPIA in Iceland as of 2015.
What is the difference in out-of-school rate for adolescents and youth of lower and upper between Iceland and Tonga?: 0.0243 GPIA, with Tonga ahead.
How many years of comparable data are there for Iceland and Tonga?: 6 years are reported by both, from 1998 to 2015.
How do Iceland and Tonga rank globally for out-of-school rate for adolescents and youth of lower and upper?: Iceland ranks 99th and Tonga ranks 96th of 137 countries.
Where does this data come from?: UNESCO Institute for Statistics, published as Out-of-school rate for adolescents and youth of lower and upper secondary school age, adjusted gender parity index (GPIA). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Iceland vs Tonga: Out-of-school rate for adolescents and youth of lower and upper. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 11 September 2026, from https://reference.statizoid.com/compare/out-of-school-rate-for-adolescents-and-youth-of-lower-and-upper-secondary-school-age-2/iceland/tonga/

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<a href="https://reference.statizoid.com/compare/out-of-school-rate-for-adolescents-and-youth-of-lower-and-upper-secondary-school-age-2/iceland/tonga/">Iceland vs Tonga: Out-of-school rate for adolescents and youth of lower and upper</a> — Statizoid

About this data

Indicator: Out-of-school rate for adolescents and youth of lower and upper secondary school age, adjusted gender parity index (GPIA)
Unit: GPIA
Source: UNESCO Institute for Statistics
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 180 places, 4,096 data points, 1970–2019
Last refreshed: 04 September 2026

The Adjusted Gender Parity Index (GPIA) is calculated by dividing the female value for the indicator by the male value for the indicator. If the resulting value exceeds 1, the ratio is inverted and subtracted from 2. The adjusted gender parity index is symmetrical around 1 and lies in the range 0-2. An adjusted 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. For more information, consult the UNESCO Institute for Statistics: http://uis.unesco.org/