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

6 years are reported by both, from 2006 to 2022.

Where does this data come from?

OECD (2023) – with minor processing by Our World in Data, published as Average performance of 15-year-old girls and boys in sciences. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Bulgaria vs Romania: Average performance of 15-year-old girls and boys in sciences

Bulgaria

429.72 score

in 2022

Romania

428.17 score

in 2022

Bulgaria rank

44th

Romania rank

45th

Average performance of 15-year-old girls and boys in sciences over time

Bulgaria
Romania

How they compare

Bulgaria currently reports 429.72 score against 428.17 score in Romania, a difference of 1.55 score.

Across all 6 years both countries report, Bulgaria has been ahead every year.

Bulgaria ranks 44th and Romania ranks 45th of 56 countries.

Bulgaria has averaged higher in every one of the 3 decades both report.

Head to head by decade

Decade	Bulgaria	Romania	Difference	Ahead
2000s	446.24 score	426.27 score	19.98 score	Bulgaria
2010s	447.67 score	435.07 score	12.6 score	Bulgaria
2020s	429.72 score	428.17 score	1.54 score	Bulgaria

Averages of every year both report within each decade.

Frequently asked questions

Which has higher average performance of 15-year-old girls and boys in sciences, Bulgaria or Romania?: Bulgaria, at 429.72 score against 428.17 score in Romania as of 2022.
What is the difference in average performance of 15-year-old girls and boys in sciences between Bulgaria and Romania?: 1.55 score, with Bulgaria ahead.
How many years of comparable data are there for Bulgaria and Romania?: 6 years are reported by both, from 2006 to 2022.
How do Bulgaria and Romania rank globally for average performance of 15-year-old girls and boys in sciences?: Bulgaria ranks 44th and Romania ranks 45th of 56 countries.
Where does this data come from?: OECD (2023) – with minor processing by Our World in Data, published as Average performance of 15-year-old girls and boys in sciences. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Bulgaria vs Romania: Average performance of 15-year-old girls and boys in sciences. Statizoid, drawing on OECD (2023) – with minor processing by Our World in Data. Retrieved 02 September 2026, from https://reference.statizoid.com/compare/average-performance-of-15-year-old-girls-and-boys-on-the-science-scale/bulgaria/romania/

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<a href="https://reference.statizoid.com/compare/average-performance-of-15-year-old-girls-and-boys-on-the-science-scale/bulgaria/romania/">Bulgaria vs Romania: Average performance of 15-year-old girls and boys in sciences</a> — Statizoid

About this data

Indicator: Average performance of 15-year-old girls and boys in sciences
Unit: score
Source: OECD (2023) – with minor processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 56 places, 330 data points, 2006–2022
Last refreshed: 28 August 2026

Assessed through the PISA science scale, which assesses how comfortable and knowledgeable someone is with science topics, focusing on their ability to discuss and think about scientific issues in everyday life.