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The Nation's Report Card

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Improvement in mathematics for lower-, middle-, and higher-performing students varies by age

 Average Scale Score
 Performance Level

Trend in NAEP mathematics percentile scores for 13-year-old students

graph key


  • Compared to 2004, scores increased for 13-year-olds performing at the 10th and 50th percentiles in 2008.
  • There were no significant changes in the performance of 13-year-olds at the 25th, 75th, or 90th percentiles compared to 2004.


* Significantly different (p < .05) from 2008.
NOTE: View complete data with standard errors.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), various years, 1978–2008 Long-Term Trend Mathematics Assessments.

To read more details on comparisons across years, see About the Long-Term Trend Assessment.

2008 Long-Term Trend Report Card 2008 Long-Term Trend Report Card