Bulgaria vs Romania: PISA: 15-year-olds by science proficiency level (%). Level 4

Bulgaria
7.4%
in 2018
Romania
6.4%
in 2018
Bulgaria rank
41st
Romania rank
42nd

PISA: 15-year-olds by science proficiency level (%). Level 4 over time

  • Bulgaria
  • Romania
02.557.51012.5200620122018

How they compare

Bulgaria currently reports 7.4% against 6.4% in Romania, a difference of 1.0%.

That makes Bulgaria's figure about 1.2 times Romania's.

Across all 5 years both countries report, Bulgaria has been ahead every year.

Bulgaria ranks 41st and Romania ranks 42nd of 52 countries.

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

Head to head by decade

Decade Bulgaria Romania Difference Ahead
2000s 10.6% 4.3% 6.3% Bulgaria
2010s 10.0% 6.2% 3.9% Bulgaria

Averages of every year both report within each decade.

Frequently asked questions

Which has higher pisa: 15-year-olds by science proficiency level (%). level 4, Bulgaria or Romania?
Bulgaria, at 7.4% against 6.4% in Romania as of 2018.
What is the difference in pisa: 15-year-olds by science proficiency level (%). level 4 between Bulgaria and Romania?
1.0%, with Bulgaria ahead.
How many years of comparable data are there for Bulgaria and Romania?
5 years are reported by both, from 2006 to 2018.
How do Bulgaria and Romania rank globally for pisa: 15-year-olds by science proficiency level (%). level 4?
Bulgaria ranks 41st and Romania ranks 42nd of 52 countries.
Where does this data come from?
OECD Programme for International Student Assessment (PISA), published as PISA: 15-year-olds by science proficiency level (%). Level 4. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Bulgaria vs Romania: PISA: 15-year-olds by science proficiency level (%). Level 4. Statizoid, drawing on OECD Programme for International Student Assessment (PISA). Retrieved 17 August 2026, from https://reference.statizoid.com/compare/pisa-15-year-olds-by-science-proficiency-level-percent-level-4/bulgaria/romania/

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About this data

Indicator
PISA: 15-year-olds by science proficiency level (%). Level 4
Source
OECD Programme for International Student Assessment (PISA)
Licence
CC BY 4.0 (World Bank Open Data)
Coverage
52 places, 296 data points, 2003–2018
Last refreshed

Percentage of 15-year-old students scoring higher than 559 but less than or equal to 633 on the PISA science scale. At Level 4, students can use more complex or more abstract content knowledge, which is either provided or recalled, to construct explanations of more complex or less familiar events and processes. They can conduct experiments involving two or more independent variables in a constrained context. They are able to justify an experimental design, drawing on elements of procedural and epistemic knowledge. Level 4 students can interpret data drawn from a moderately complex data set or less familiar context, draw appropriate conclusions that go beyond the data and provide justifications for their choices. Data reflect country performance in the stated year, but may not be comparable across years or countries. Consult the PISA website for more detailed information: http://www.oecd.org/pisa/