Statizoid

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

The Adjusted Native Parity Index (NPIA) is calculated by dividing the immigrant value for the indicator by the non-immigrant value for the indicator. If the resulting value exceeds 1, the ratio is inverted and subtracted from 2. The adjusted native parity index is symmetrical around 1 and lies in the range 0-2. An...

Countries reporting
43
Highest
1.57 NPIA
Iran
Lowest
0.2056 NPIA
Brazil
Median
0.805 NPIA
Years covered
24
1995–2018
Data points
274

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 43 countries. The highest value is 1.57 NPIA in Iran; the lowest is 0.2056 NPIA in Brazil.

The median across all reporting countries is 0.805 NPIA, and the mean is 0.8365 NPIA.

The gap between the highest and lowest reporting country is a factor of about 8.

Over the past decade 26 countries rose and 17 fell. The largest increase was in Colombia (up 663.8%), and the largest decrease in Uruguay (down 37.8%).

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

#Country LatestYear 10-year changeTrend
1 Iran 1.57 NPIA 2015 up 4.1% volatile
2 Italy 1.24 NPIA 2015 down 3.4% falling
3 Morocco 1.18 NPIA 2015 down 31.6% volatile
4 Jordan 1.11 NPIA 2018 down 6.5% falling
5 Australia 1.03 NPIA 2018 up 2.2% flat
6 Serbia 1.02 NPIA 2018 down 4.4% flat
7 New Zealand 1.01 NPIA 2018 up 7.9% flat
8 Russian Federation 0.9917 NPIA 2018 up 8.9% flat
9 Canada 0.9854 NPIA 2018 up 2.5% flat
10 United States 0.9815 NPIA 2018 up 10.6% rising
11 Hong Kong 0.9783 NPIA 2018 up 0.0% flat
12 Ireland 0.9763 NPIA 2018 up 9.3% flat
13 Lithuania 0.9691 NPIA 2018 up 6.8% flat
14 Israel 0.9619 NPIA 2018 down 3.8% falling
15 Singapore 0.9607 NPIA 2015 down 11.6% falling
16 Croatia 0.9518 NPIA 2018 up 3.1% flat
17 Latvia 0.8957 NPIA 2018 down 0.3% falling
18 Argentina 0.8933 NPIA 2018 up 18.7% falling
19 Hungary 0.889 NPIA 2015 down 22.2% falling
20 Luxembourg 0.8395 NPIA 2018 up 7.8% rising
21 Norway 0.8217 NPIA 2018 up 9.2% flat
22 Thailand 0.805 NPIA 2018 up 87.5% rising
23 Spain 0.7976 NPIA 2018 up 15.6% falling
24 Belgium 0.7822 NPIA 2018 up 5.0% rising
25 Denmark 0.7728 NPIA 2018 up 11.5% falling
26 France 0.7712 NPIA 2018 up 6.8% falling
27 Portugal 0.7683 NPIA 2018 down 6.5% falling
28 Iceland 0.7681 NPIA 2018 up 17.6% falling
29 Netherlands 0.7653 NPIA 2018 down 7.2% flat
30 Germany 0.7606 NPIA 2018 down 4.0% rising
31 Czechia 0.7407 NPIA 2018 down 13.7% falling
32 Austria 0.7401 NPIA 2018 up 3.4% falling
33 Finland 0.7151 NPIA 2018 down 15.0% falling
34 Uruguay 0.7128 NPIA 2018 down 37.8% falling
35 Bulgaria 0.7065 NPIA 2018 up 28.4% falling
36 Sweden 0.7037 NPIA 2018 up 0.6% falling
37 Slovenia 0.694 NPIA 2018 down 12.3% falling
38 Greece 0.6826 NPIA 2018 down 2.9% falling
39 Slovakia 0.6758 NPIA 2018 down 31.5% falling
40 Colombia 0.6027 NPIA 2018 up 663.8% volatile
41 Tunisia 0.3099 NPIA 2015 up 45.0% volatile
42 Mexico 0.2441 NPIA 2018 up 1.3% falling
43 Brazil 0.2056 NPIA 2018 up 67.3% volatile

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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-11/

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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 4.0 (World Bank Open Data)
Coverage
43 places, 274 data points, 1995–2018
Last refreshed

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