How many years of comparable data are there for Bulgaria and Sweden?

6 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 education achieving at least a minimum proficiency level in reading, adjusted native parity index (NPIA). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Bulgaria vs Sweden: Proportion of students at the end of lower secondary education

Bulgaria

0.6942 NPIA

in 2018

Sweden

0.7083 NPIA

in 2018

Bulgaria rank

36th

Sweden rank

33rd

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

Bulgaria
Sweden

How they compare

Sweden currently reports 0.7083 NPIA against 0.6942 NPIA in Bulgaria, a difference of 0.0141 NPIA.

The two have swapped places 1 time across 6 shared years of data; in 2000 it was Bulgaria ahead.

Bulgaria ranks 36th and Sweden ranks 33rd of 44 countries.

Sweden has averaged higher in every one of the 2 decades both report.

Head to head by decade

Decade	Bulgaria	Sweden	Difference	Ahead
2000s	0.6236 NPIA	0.8361 NPIA	0.2125 NPIA	Sweden
2010s	0.5341 NPIA	0.7426 NPIA	0.2084 NPIA	Sweden

Averages of every year both report within each decade.

Frequently asked questions

Which has higher proportion of students at the end of lower secondary education, Bulgaria or Sweden?: Sweden, at 0.7083 NPIA against 0.6942 NPIA in Bulgaria as of 2018.
What is the difference in proportion of students at the end of lower secondary education between Bulgaria and Sweden?: 0.0141 NPIA, with Sweden ahead.
How many years of comparable data are there for Bulgaria and Sweden?: 6 years are reported by both, from 2000 to 2018.
How do Bulgaria and Sweden rank globally for proportion of students at the end of lower secondary education?: Bulgaria ranks 36th and Sweden ranks 33rd of 44 countries.
Where does this data come from?: UNESCO Institute for Statistics, published as Proportion of students at the end of lower secondary education achieving at least a minimum proficiency level in reading, adjusted native parity index (NPIA). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Bulgaria vs Sweden: Proportion of students at the end of lower secondary education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 05 September 2026, from https://reference.statizoid.com/compare/proportion-of-students-at-the-end-of-lower-secondary-education-achieving-at-least-a-25/bulgaria/sweden/

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<a href="https://reference.statizoid.com/compare/proportion-of-students-at-the-end-of-lower-secondary-education-achieving-at-least-a-25/bulgaria/sweden/">Bulgaria vs Sweden: Proportion of students at the end of lower secondary education</a> — Statizoid

About this data

Indicator: Proportion of students at the end of lower secondary education achieving at least a minimum proficiency level in reading, adjusted native parity index (NPIA)
Unit: NPIA
Source: UNESCO Institute for Statistics
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 44 places, 280 data points, 2000–2018
Last refreshed: 04 September 2026

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/