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Proportion of students at the end of lower secondary education achieving at least a minimum proficiency level in reading, 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
46
Highest
0.8858 WPIA
Hong Kong
Lowest
0.3399 WPIA
Tunisia
Median
0.7048 WPIA
Years covered
19
2000–2018
Data points
295

What the numbers show

Proportion of students at the end of lower secondary education achieving at least a minimum proficiency level in reading, adjusted wealth parity index (WPIA) is currently reported for 46 countries. The highest value is 0.8858 WPIA in Hong Kong; the lowest is 0.3399 WPIA in Tunisia.

The median across all reporting countries is 0.7048 WPIA, and the mean is 0.6561 WPIA.

The gap between the highest and lowest reporting country is a factor of about 3.

Over the past decade 26 countries rose and 20 fell. The largest increase was in Austria (up 27.2%), and the largest decrease in Thailand (down 27.9%).

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

#Country LatestYear 10-year changeTrend
1 Hong Kong 0.8858 WPIA 2018 down 4.7% flat
2 Canada 0.8518 WPIA 2018 down 2.0% flat
3 Finland 0.8461 WPIA 2018 down 4.5% falling
4 Ireland 0.8387 WPIA 2018 up 11.0% flat
5 Republic of Korea 0.8162 WPIA 2018 down 9.1% falling
6 Poland 0.8101 WPIA 2018 up 6.8% rising
7 Norway 0.8061 WPIA 2018 up 0.1% rising
8 Croatia 0.8038 WPIA 2018 up 15.2% rising
9 Slovenia 0.7938 WPIA 2018 up 19.3% rising
10 Russian Federation 0.7856 WPIA 2018 up 21.9% rising
11 Denmark 0.783 WPIA 2018 up 4.2% rising
12 Latvia 0.7821 WPIA 2018 up 0.9% rising
13 Sweden 0.7748 WPIA 2018 up 6.3% falling
14 Spain 0.7674 WPIA 2015 up 22.2% rising
15 Australia 0.7619 WPIA 2018 down 0.6% falling
16 United States 0.76 WPIA 2018 up 6.0% rising
17 New Zealand 0.7523 WPIA 2018 down 0.4% flat
18 Netherlands 0.7325 WPIA 2018 down 11.2% falling
19 Iceland 0.7323 WPIA 2018 down 12.5% falling
20 Italy 0.719 WPIA 2018 up 2.6% flat
21 Portugal 0.714 WPIA 2018 down 1.6% rising
22 Türkiye 0.7126 WPIA 2018 up 16.7% rising
23 Germany 0.705 WPIA 2018 up 8.8% rising
24 Austria 0.7047 WPIA 2018 up 27.2% flat
25 France 0.6971 WPIA 2018 up 7.1% flat
26 Belgium 0.6782 WPIA 2018 down 2.2% rising
27 Czechia 0.677 WPIA 2018 down 2.9% flat
28 Lithuania 0.6764 WPIA 2018 up 1.4% rising
29 Greece 0.6326 WPIA 2018 down 5.5% falling
30 Chile 0.6325 WPIA 2018 up 15.6% rising
31 Jordan 0.601 WPIA 2018 up 15.0% rising
32 Luxembourg 0.5826 WPIA 2018 up 5.4% rising
33 Hungary 0.5813 WPIA 2018 down 2.9% flat
34 Israel 0.5703 WPIA 2018 down 11.1% rising
35 Slovakia 0.5605 WPIA 2018 down 14.3% flat
36 Mexico 0.4681 WPIA 2018 up 2.9% rising
37 Romania 0.4656 WPIA 2018 down 5.2% rising
38 Uruguay 0.4641 WPIA 2018 up 9.1% flat
39 Qatar 0.4615 WPIA 2018 down 4.4% rising
40 Brazil 0.4511 WPIA 2018 up 0.7% rising
41 Colombia 0.4404 WPIA 2018 up 2.7% rising
42 Thailand 0.4133 WPIA 2018 down 27.9% falling
43 Bulgaria 0.3993 WPIA 2018 up 4.3% rising
44 Indonesia 0.3886 WPIA 2018 down 27.5% rising
45 Argentina 0.3588 WPIA 2018 up 5.8% flat
46 Tunisia 0.3399 WPIA 2015 down 22.3% flat

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Proportion of students at the end of lower secondary education by country. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 30 August 2026, from https://reference.statizoid.com/stat/proportion-of-students-at-the-end-of-lower-secondary-education-achieving-at-least-a-28/

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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 reading, adjusted wealth parity index (WPIA)
Unit
WPIA
Source
UNESCO Institute for Statistics
Licence
CC BY 4.0 (World Bank Open Data)
Coverage
46 places, 295 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/