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

8 years are reported by both, from 1978 to 2023.

Where does this data come from?

Data API, UN Educational, Scientific and Cultural Organization (UNESCO), published as School enrollment, tertiary (gross), gender parity index (GPI). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Iceland vs Tonga: School enrollment, tertiary (gross), gender parity index

Iceland

1.52 GPI

in 2023

Tonga

1.51 GPI

in 2023

Iceland rank

12th

Tonga rank

14th

School enrollment, tertiary (gross), gender parity index over time

Iceland
Tonga

How they compare

Iceland currently reports 1.52 GPI against 1.51 GPI in Tonga, a difference of 0.01 GPI.

The two have swapped places 5 times across 8 shared years of data; in 1978 it was Tonga ahead.

Iceland ranks 12th and Tonga ranks 14th of 187 countries.

Across the 5 decades both report, Iceland averaged higher in 3 and Tonga in 2.

Head to head by decade

Decade	Iceland	Tonga	Difference	Ahead
1970s	0.7398 GPI	0.8375 GPI	0.0977 GPI	Tonga
1980s	1.09 GPI	1.02 GPI	0.0692 GPI	Iceland
1990s	1.4 GPI	1.22 GPI	0.1799 GPI	Iceland
2000s	1.44 GPI	1.4 GPI	0.0415 GPI	Iceland
2020s	1.51 GPI	1.52 GPI	0.0199 GPI	Tonga

Averages of every year both report within each decade.

Frequently asked questions

Which has higher school enrollment, tertiary (gross), gender parity index, Iceland or Tonga?: Iceland, at 1.52 GPI against 1.51 GPI in Tonga as of 2023.
What is the difference in school enrollment, tertiary (gross), gender parity index between Iceland and Tonga?: 0.01 GPI, with Iceland ahead.
How many years of comparable data are there for Iceland and Tonga?: 8 years are reported by both, from 1978 to 2023.
How do Iceland and Tonga rank globally for school enrollment, tertiary (gross), gender parity index?: Iceland ranks 12th and Tonga ranks 14th of 187 countries.
Where does this data come from?: Data API, UN Educational, Scientific and Cultural Organization (UNESCO), published as School enrollment, tertiary (gross), gender parity index (GPI). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Iceland vs Tonga: School enrollment, tertiary (gross), gender parity index. Statizoid, drawing on Data API, UN Educational, Scientific and Cultural Organization (UNESCO). Retrieved 27 August 2026, from https://education.statizoid.com/compare/school-enrollment-tertiary-gross-gender-parity-index-gpi/iceland/tonga/

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<a href="https://education.statizoid.com/compare/school-enrollment-tertiary-gross-gender-parity-index-gpi/iceland/tonga/">Iceland vs Tonga: School enrollment, tertiary (gross), gender parity index</a> — Statizoid

About this data

Indicator: School enrollment, tertiary (gross), gender parity index (GPI)
Unit: GPI
Source: Data API, UN Educational, Scientific and Cultural Organization (UNESCO)
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 232 places, 6,538 data points, 1970–2025
Last refreshed: 20 August 2026

Gender parity index for gross enrollment ratio in tertiary education is the ratio of women to men enrolled at tertiary level in public and private schools.