NAEP Technical DocumentationMathematics Long-Term Trend Assessment Subscale Composition for New and Previously Administered Blocks at Age 17: 2004

Each assessment includes blocks of new items and blocks of items from previous assessments. For the new items and for the previously administered items in each mathematics long-term trend scale, the number of multiple-choice and dichotomously scored constructed-response items are provided at age 17. The item counts are available for each scale as defined in the final Item Response Theory (IRT) scales.

Scale composition for new blocks as defined after scaling, by item type and scale, age 17 mathematics long-term trend assessment: 2004
Scale	Total	Number of multiple-choice items		Number of dichotomously scored constructed-response items
Scale	Total	Scaled	Dropped	Scaled	Dropped
Mathematics long-term trend age 17	162	126	2	34	0
NOTE: "Dropped" denotes items that were deleted from the final scaling. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2004 Mathematics Long-Term Trend Assessment.

Scale composition for trend blocks as defined after scaling, by item type and scale, age 17 mathematics long-term trend assessment: 2004
Scale	Multiple-choice items			Dichotomously scored constructed-response items
Scale	Concurrent	Split	Dropped	Concurrent	Split	Dropped
NOTE: "Concurrent" denotes items that were scaled as common items across assessment years. "Split" denotes items that were scaled as different items in each assessment year. "Dropped" denotes items that were deleted from the final scaling. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2004 Mathematics Long-Term Trend Assessment.
Total	48	2	5	15	0	0

Last updated 21 July 2009 (JL)

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