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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 17-year-old students

graph key


  • Compared to 2004, there were no significant changes in the scores of 17-year-olds in any of the percentile groups in 2008.

* 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