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Number of long-term trend mathematics items, by age: 2008
Age Total
NOTE: The long-term trend assessment is analyzed using a single scale. The numbers in this table represent the post-scaling counts of items.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2008 Mathematics Long-Term Trend  Assessment.
9 135
13 156
17 156

Last updated 20 January 2010 (JL)