Costa Rica vs Iran: Upper secondary completion rate, adjusted gender parity index
Costa Rica
1.17 index
in 2025
Iran
1.18 index
in 2025
Costa Rica rank
40th
Iran rank
37th
Upper secondary completion rate, adjusted gender parity index over time
- Costa Rica
- Iran
How they compare
Iran currently reports 1.18 index against 1.17 index in Costa Rica, a difference of 0.01 index.
The two have swapped places 1 time across 45 shared years of data; in 1981 it was Costa Rica ahead.
Costa Rica ranks 40th and Iran ranks 37th of 164 countries.
Across the 5 decades both report, Costa Rica averaged higher in 4 and Iran in 1.
Head to head by decade
| Decade | Costa Rica | Iran | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 1.01 index | 0.557 index | 0.4485 index | Costa Rica |
| 1990s | 1.03 index | 0.8024 index | 0.2289 index | Costa Rica |
| 2000s | 1.15 index | 1.1 index | 0.0499 index | Costa Rica |
| 2010s | 1.17 index | 1.12 index | 0.0495 index | Costa Rica |
| 2020s | 1.17 index | 1.17 index | 0.0031 index | Iran |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher upper secondary completion rate, adjusted gender parity index, Costa Rica or Iran?
- Iran, at 1.18 index against 1.17 index in Costa Rica as of 2025.
- What is the difference in upper secondary completion rate, adjusted gender parity index between Costa Rica and Iran?
- 0.01 index, with Iran ahead.
- How many years of comparable data are there for Costa Rica and Iran?
- 45 years are reported by both, from 1981 to 2025.
- How do Costa Rica and Iran rank globally for upper secondary completion rate, adjusted gender parity index?
- Costa Rica ranks 40th and Iran 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 Upper secondary completion rate, 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 upper secondary school completion rates between boys and girls. Values below 1 favor boys, and values above 1 favor girls.