Adjusted Secondary Math Scores Across Countries and Time

Adjusted secondary mathematics test scores standardize results from international and regional assessments for comparability over time and across countries. The data is calculated by creating ratios between U.S. scores on tests like PISA and TIMSS and the U.S. NAEP, approximated to 5-year intervals from 1965 to 2010. It is produced by Education Statistics, likely from the World Bank's EdStats initiative.

Use Cases

• Analyze trends in the adjusted_math_score over the 1965-2010 time_range to compare educational progress across different countries.
• Model the relationship between a country's adjusted_math_score and economic development indicators using the standardized metric.
• Benchmark national mathematics performance by comparing a country's score against the international average for a given 5-year interval.
• Investigate convergence or divergence in global math education by tracking score changes across the geography of participating nations.

Strengths

• Scores are adjusted for comparability across different international and regional assessments like PISA and TIMSS.
• Data provides a consistent time-series with approximations to 5-year intervals from 1965 to 2010.
• Methodology incorporates scores from countries participating only in regional assessments via a defined ratio transformation.

Limitations

• The underlying sample size of countries and students for each score point is unknown.
• Data granularity is limited to 5-year approximations, missing annual fluctuations.
• The time series ends in 2010, making it stale for analyzing recent educational trends.

Provenance

Source

Education Statistics, likely part of the World Bank's EdStats database.

Collection Method

Scores are calculated by standardizing raw international and regional test scores using ratios derived from U.S. performance on NAEP and international assessments.

Time Range

1965 to 2010

Geography

International coverage, including countries participating in international and regional assessments.