How many years of comparable data are there for Belgium and Croatia?

5 years are reported by both, from 2006 to 2018.

Where does this data come from?

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

Belgium vs Croatia: Proportion of students at the end of lower secondary achieving at

Belgium

0.6663 WPIA

in 2018

Croatia

0.6835 WPIA

in 2018

Belgium rank

21st

Croatia rank

18th

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

Belgium
Croatia

How they compare

Croatia currently reports 0.6835 WPIA against 0.6663 WPIA in Belgium, a difference of 0.0172 WPIA.

The two have swapped places 1 time across 5 shared years of data; in 2006 it was Belgium ahead.

Belgium ranks 21st and Croatia ranks 18th of 41 countries.

Belgium has averaged higher in every one of the 2 decades both report.

Head to head by decade

Decade	Belgium	Croatia	Difference	Ahead
2000s	0.6702 WPIA	0.6105 WPIA	0.0597 WPIA	Belgium
2010s	0.6734 WPIA	0.6557 WPIA	0.0177 WPIA	Belgium

Averages of every year both report within each decade.

Frequently asked questions

Which has higher proportion of students at the end of lower secondary achieving at, Belgium or Croatia?: Croatia, at 0.6835 WPIA against 0.6663 WPIA in Belgium as of 2018.
What is the difference in proportion of students at the end of lower secondary achieving at between Belgium and Croatia?: 0.0172 WPIA, with Croatia ahead.
How many years of comparable data are there for Belgium and Croatia?: 5 years are reported by both, from 2006 to 2018.
How do Belgium and Croatia rank globally for proportion of students at the end of lower secondary achieving at?: Belgium ranks 21st and Croatia ranks 18th of 41 countries.
Where does this data come from?: UNESCO Institute for Statistics, published as Proportion of students at the end of lower secondary achieving at least a minimum proficiency level in mathematics, adjusted wealth parity index (WPIA). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Belgium vs Croatia: Proportion of students at the end of lower secondary achieving at. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 03 September 2026, from https://reference.statizoid.com/compare/proportion-of-students-at-the-end-of-lower-secondary-achieving-at-least-a-minimum-3/belgium/croatia/

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<a href="https://reference.statizoid.com/compare/proportion-of-students-at-the-end-of-lower-secondary-achieving-at-least-a-minimum-3/belgium/croatia/">Belgium vs Croatia: Proportion of students at the end of lower secondary achieving at</a> — Statizoid

About this data

Indicator: Proportion of students at the end of lower secondary achieving at least a minimum proficiency level in mathematics, adjusted wealth parity index (WPIA)
Unit: WPIA
Source: UNESCO Institute for Statistics
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 41 places, 266 data points, 2000–2018
Last refreshed: 21 August 2026

The Adjusted Wealth Parity Index (WPIA) is calculated by dividing the poorest quintile value for the indicator by the richest quintile value for the indicator. If the resulting value exceeds 1, the ratio is inverted and subtracted from 2. The adjusted wealth parity index is symmetrical around 1 and lies in the range 0-2. An adjusted WPI equal to 1 indicates parity between the richest and poorest quintiles. In general, a value less than 1 indicates disparity in favor of the richest quintile and a value greater than 1 indicates disparity in favor of the poorest quintile. For more information, consult the UNESCO Institute for Statistics: http://uis.unesco.org/