Adjusted Secondary Science Scores Across Countries 1965-2010

1965-2010 standardized secondary school science test scores, enabling comparisons across time, countries, and international assessments. The data is constructed by the World Bank's Education Statistics using scores from tests like PISA, TIMSS, and the U.S. NAEP, adjusted via calculated ratios. Scores are aggregated and approximated to 5-year intervals.

Use Cases

• Analyze trends in the adjusted secondary science score over the 1965-2010 period for specific countries.
• Compare science education performance between countries that participated in different international and regional assessments.
• Model the relationship between a country's economic indicators and its time-series of adjusted science scores.
• Investigate convergence or divergence in science achievement across country groups using the standardized scores.

Strengths

• Scores are standardized for comparability across 45 years (1965-2010).
• Data integrates multiple major international assessments (PISA, TIMSS) and national tests (NAEP).
• Methodology explicitly addresses comparability for countries participating in regional assessments.

Limitations

• Data granularity is limited to 5-year intervals, obscuring annual fluctuations.
• The adjustment methodology relies on approximations and ratios which may introduce measurement error.
• Coverage ends in 2010, making the data over a decade old for current analysis.

Provenance

Source

World Bank Education Statistics (EdStats)

Collection Method

Calculated from international (PISA, TIMSS) and U.S. national (NAEP) assessment scores, adjusted using standardized ratios.

Time Range

1965 to 2010

Geography

International, covering countries participating in the referenced assessments.