How many years of comparable data are there for Latvia and Poland?

7 years are reported by both, from 2000 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.

Latvia vs Poland: Proportion of students at the end of lower secondary achieving at

Latvia

0.7791 WPIA

in 2018

Poland

0.7756 WPIA

in 2018

Latvia rank

7th

Poland rank

9th

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

Latvia
Poland

How they compare

Latvia currently reports 0.7791 WPIA against 0.7756 WPIA in Poland, a difference of 0.0035 WPIA.

The two have swapped places 2 times across 7 shared years of data; in 2000 it was Latvia ahead.

Latvia ranks 7th and Poland ranks 9th of 41 countries.

Across the 2 decades both report, Latvia averaged higher in 1 and Poland in 1.

Head to head by decade

Decade	Latvia	Poland	Difference	Ahead
2000s	0.6895 WPIA	0.6438 WPIA	0.0457 WPIA	Latvia
2010s	0.7446 WPIA	0.7593 WPIA	0.0147 WPIA	Poland

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, Latvia or Poland?: Latvia, at 0.7791 WPIA against 0.7756 WPIA in Poland as of 2018.
What is the difference in proportion of students at the end of lower secondary achieving at between Latvia and Poland?: 0.0035 WPIA, with Latvia ahead.
How many years of comparable data are there for Latvia and Poland?: 7 years are reported by both, from 2000 to 2018.
How do Latvia and Poland rank globally for proportion of students at the end of lower secondary achieving at?: Latvia ranks 7th and Poland ranks 9th 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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Latvia vs Poland: Proportion of students at the end of lower secondary achieving at. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 01 September 2026, from https://reference.statizoid.com/compare/proportion-of-students-at-the-end-of-lower-secondary-achieving-at-least-a-minimum-3/latvia/poland/

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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/