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

February 2026 Data Release

Countries reporting
50
Highest
1.12 NPIA
Romania
Lowest
0.0951 NPIA
Mexico
Median
0.7486 NPIA
Years covered
29
1995–2023
Data points
355

What the numbers show

Proportion of students at the end of lower secondary education achieving at least a minimum proficiency level in mathematics, adjusted native parity index (NPIA) is currently reported for 50 countries. The highest value is 1.12 NPIA in Romania; the lowest is 0.0951 NPIA in Mexico.

The median across all reporting countries is 0.7486 NPIA, and the mean is 0.7638 NPIA.

The gap between the highest and lowest reporting country is a factor of about 12.

Over the past decade 19 countries rose and 31 fell. The largest increase was in Colombia (up 588.6%), and the largest decrease in Mexico (down 64.1%).

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

#Country LatestYear 10-year changeTrend
1 Romania 1.12 NPIA 2022 down 15.4% rising
2 Bahrain 1.11 NPIA 2019 up 172.5% flat
3 Uruguay 1.09 NPIA 2022 down 0.5% falling
4 Australia 1.07 NPIA 2022 up 2.4% rising
5 Singapore 1.06 NPIA 2023 up 8.1% rising
6 Hungary 1.06 NPIA 2023 up 72.1% falling
7 Serbia 1.03 NPIA 2022 down 4.9% flat
8 Jordan 1.02 NPIA 2022 down 16.9% falling
9 Croatia 1.01 NPIA 2022 up 11.3% rising
10 Russian Federation 0.9917 NPIA 2018 up 8.9% flat
11 Canada 0.9799 NPIA 2022 up 0.1% flat
12 New Zealand 0.9794 NPIA 2022 up 3.0% flat
13 Latvia 0.9693 NPIA 2022 up 0.3% flat
14 Ireland 0.9471 NPIA 2022 down 3.9% flat
15 Hong Kong, China 0.946 NPIA 2022 down 5.5% flat
16 Lithuania 0.9319 NPIA 2022 down 6.4% falling
17 Bulgaria 0.8955 NPIA 2022 up 102.6% falling
18 Luxembourg 0.8395 NPIA 2018 up 7.8% rising
19 Slovakia 0.8386 NPIA 2022 down 10.1% falling
20 Lebanon 0.8149 NPIA 2019 up 8.0% falling
21 Japan 0.8133 NPIA 2023 down 13.6% rising
22 United States of America 0.7689 NPIA 2022 down 16.3% flat
23 Türkiye 0.7684 NPIA 2023 down 12.4% flat
24 Italy 0.76 NPIA 2023 down 4.2% falling
25 Argentina 0.756 NPIA 2022 up 55.2% flat
26 Czechia 0.7413 NPIA 2022 down 15.4% falling
27 Portugal 0.738 NPIA 2022 down 0.6% falling
28 Norway 0.7378 NPIA 2022 up 0.6% flat
29 Spain 0.7143 NPIA 2022 down 1.0% falling
30 Colombia 0.6917 NPIA 2022 up 588.6% volatile
31 Iceland 0.6814 NPIA 2022 down 9.9% falling
32 Belgium 0.6808 NPIA 2022 down 4.9% flat
33 Israel 0.6706 NPIA 2022 down 37.5% falling
34 Austria 0.6644 NPIA 2022 down 10.3% falling
35 France 0.6599 NPIA 2022 down 4.2% falling
36 Netherlands 0.6551 NPIA 2022 down 19.4% falling
37 Denmark 0.653 NPIA 2022 down 3.0% falling
38 Albania 0.6369 NPIA 2022 down 45.1% rising
39 Slovenia 0.62 NPIA 2022 down 19.4% falling
40 Chile 0.6175 NPIA 2023 down 25.6% falling
41 Costa Rica 0.605 NPIA 2022 up 6.7% falling
42 Iran, Islamic Republic of 0.5974 NPIA 2023 up 60.9% volatile
43 Sweden 0.5968 NPIA 2022 down 12.0% falling
44 Finland 0.5486 NPIA 2022 down 10.8% falling
45 Thailand 0.5392 NPIA 2022 up 4.5% rising
46 Germany 0.461 NPIA 2022 down 42.2% falling
47 Greece 0.3778 NPIA 2022 down 39.8% falling
48 Brazil 0.3244 NPIA 2022 down 36.7% volatile
49 Tunisia 0.3099 NPIA 2015 up 45.0% volatile
50 Mexico 0.0951 NPIA 2022 down 64.1% falling

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Proportion of students at the end of lower secondary education by country. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 05 September 2026, from https://education.statizoid.com/stat/proportion-of-students-at-the-end-of-lower-secondary-education-achieving-at-least-a-38/

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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

February 2026 Data Release