How many years of comparable data are there for Chile and Iran, Islamic Republic of?

6 years are reported by both, from 1999 to 2023.

Where does this data come from?

UNESCO Institute for Statistics, published as Proportion of students at the end of lower secondary education achieving at least a minimum proficiency level in mathematics, adjusted native parity index (NPIA). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Chile vs Iran, Islamic Republic of: Proportion of students at the end of lower secondary education

Chile

0.6175 NPIA

in 2023

Iran, Islamic Republic of

0.5974 NPIA

in 2023

Chile rank

40th

Iran, Islamic Republic of rank

42nd

Proportion of students at the end of lower secondary education over time

Chile
Iran, Islamic Republic of

How they compare

Chile currently reports 0.6175 NPIA against 0.5974 NPIA in Iran, Islamic Republic of, a difference of 0.0201 NPIA.

The two have swapped places 3 times across 6 shared years of data; in 1999 it was Iran, Islamic Republic of ahead.

Chile ranks 40th and Iran, Islamic Republic of ranks 42nd of 50 countries.

Across the 4 decades both report, Chile averaged higher in 1 and Iran, Islamic Republic of in 3.

Head to head by decade

Decade	Chile	Iran, Islamic Republic of	Difference	Ahead
1990s	1.04 NPIA	1.25 NPIA	0.2059 NPIA	Iran, Islamic Republic of
2000s	1.45 NPIA	1.51 NPIA	0.061 NPIA	Iran, Islamic Republic of
2010s	0.799 NPIA	0.9118 NPIA	0.1128 NPIA	Iran, Islamic Republic of
2020s	0.6175 NPIA	0.5974 NPIA	0.0201 NPIA	Chile

Averages of every year both report within each decade.

Frequently asked questions

Which has higher proportion of students at the end of lower secondary education, Chile or Iran, Islamic Republic of?: Chile, at 0.6175 NPIA against 0.5974 NPIA in Iran, Islamic Republic of as of 2023.
What is the difference in proportion of students at the end of lower secondary education between Chile and Iran, Islamic Republic of?: 0.0201 NPIA, with Chile ahead.
How many years of comparable data are there for Chile and Iran, Islamic Republic of?: 6 years are reported by both, from 1999 to 2023.
How do Chile and Iran, Islamic Republic of rank globally for proportion of students at the end of lower secondary education?: Chile ranks 40th and Iran, Islamic Republic of ranks 42nd of 50 countries.
Where does this data come from?: UNESCO Institute for Statistics, published as Proportion of students at the end of lower secondary education achieving at least a minimum proficiency level in mathematics, adjusted native parity index (NPIA). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Chile vs Iran, Islamic Republic of: Proportion of students at the end of lower secondary education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 11 September 2026, from https://education.statizoid.com/compare/proportion-of-students-at-the-end-of-lower-secondary-education-achieving-at-least-a-38/chile/iran-islamic-rep/

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About this data

Indicator: Proportion of students at the end of lower secondary education achieving at least a minimum proficiency level in mathematics, adjusted native parity index (NPIA)
Unit: NPIA
Source: UNESCO Institute for Statistics
Licence: CC BY-SA 3.0 IGO (UNESCO Institute for Statistics)
Coverage: 50 places, 355 data points, 1995–2023
Last refreshed: 06 September 2026

February 2026 Data Release