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Proportion of students at the end of lower secondary achieving at least a minimum proficiency level in mathematics, adjusted wealth parity index (WPIA) by country

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...

Countries reporting
41
Highest
0.8921 WPIA
Hong Kong, China
Lowest
0.1974 WPIA
Argentina
Median
0.6663 WPIA
Years covered
19
2000–2018
Data points
266

What the numbers show

Proportion of students at the end of lower secondary achieving at least a minimum proficiency level in mathematics, adjusted wealth parity index (WPIA) is currently reported for 41 countries. The highest value is 0.8921 WPIA in Hong Kong, China; the lowest is 0.1974 WPIA in Argentina.

The median across all reporting countries is 0.6663 WPIA, and the mean is 0.6227 WPIA.

The gap between the highest and lowest reporting country is a factor of about 5.

Over the past decade 28 countries rose and 12 fell. The largest increase was in Colombia (up 72.9%), and the largest decrease in Slovakia (down 12.1%).

Proportion of students at the end of lower secondary achieving at: full country ranking

#Country LatestYear 10-year changeTrend
1 Hong Kong, China 0.8921 WPIA 2018 unchanged flat
2 Canada 0.8094 WPIA 2018 down 2.9% falling
3 Republic of Korea 0.7994 WPIA 2018 down 8.1% falling
4 Finland 0.7993 WPIA 2018 down 11.3% falling
5 Denmark 0.7965 WPIA 2018 up 8.7% rising
6 Norway 0.784 WPIA 2018 up 4.7% rising
7 Latvia 0.7791 WPIA 2018 up 15.1% rising
8 Netherlands 0.779 WPIA 2018 up 0.3% falling
9 Poland 0.7756 WPIA 2018 up 16.5% rising
10 Ireland 0.775 WPIA 2018 up 12.6% flat
11 Slovenia 0.7693 WPIA 2018 up 13.6% rising
12 Iceland 0.764 WPIA 2018 down 4.2% falling
13 Russian Federation 0.7556 WPIA 2018 up 22.3% rising
14 Sweden 0.7295 WPIA 2018 up 10.8% falling
15 Australia 0.7144 WPIA 2018 down 3.0% falling
16 New Zealand 0.7005 WPIA 2018 up 0.2% falling
17 Austria 0.7004 WPIA 2018 up 11.6% flat
18 Croatia 0.6835 WPIA 2018 up 12.8% rising
19 Germany 0.6825 WPIA 2018 up 8.5% rising
20 Spain 0.6801 WPIA 2018 up 9.1% rising
21 Belgium 0.6663 WPIA 2018 up 2.4% flat
22 Czechia 0.6636 WPIA 2018 down 0.2% flat
23 Portugal 0.6478 WPIA 2018 up 3.7% rising
24 Lithuania 0.6453 WPIA 2018 up 8.5% rising
25 France 0.6438 WPIA 2018 up 6.5% falling
26 United States of America 0.6156 WPIA 2018 down 1.9% rising
27 Luxembourg 0.5948 WPIA 2018 down 2.0% rising
28 Greece 0.5728 WPIA 2018 down 4.0% rising
29 Slovakia 0.567 WPIA 2018 down 12.1% falling
30 Thailand 0.5398 WPIA 2018 up 10.1% flat
31 Israel 0.5324 WPIA 2018 up 18.3% rising
32 Jordan 0.5228 WPIA 2018 up 68.9% rising
33 Bulgaria 0.4482 WPIA 2018 up 37.9% rising
34 Mexico 0.4405 WPIA 2018 up 15.7% rising
35 Romania 0.4013 WPIA 2018 down 10.9% rising
36 Uruguay 0.3883 WPIA 2018 up 9.0% flat
37 Indonesia 0.3699 WPIA 2018 up 30.4% flat
38 Colombia 0.3367 WPIA 2018 up 72.9% rising
39 Tunisia 0.307 WPIA 2015 up 32.9% rising
40 Brazil 0.2585 WPIA 2018 up 7.2% rising
41 Argentina 0.1974 WPIA 2018 down 10.6% falling

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Proportion of students at the end of lower secondary achieving at by country. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 24 August 2026, from https://reference.statizoid.com/stat/proportion-of-students-at-the-end-of-lower-secondary-achieving-at-least-a-minimum-3/

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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

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/