NAEP Technical DocumentationMathematics Long-Term Trend Assessment Subscale Composition for New and Previously Administered Blocks: 2008

Scale composition for new blocks as defined after scaling, mathematics long-term trend assessment, by item type and age: 2008
Age	Multiple choice items		Dichotomously scored constructed-response items		Polytomously scored constructed-response items
Age	Scaled	Dropped	Scaled	Dropped	Polytomous (uncollapsed)	Dichotomous collapsed	Polytomous collapsed	Dropped
NOTE: "Dropped" denotes items that were deleted from the final scaling. "Collapsed" denotes items that had categories that were combined and recoded for scaling. 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	17	0	5	0	0	0	0	0
13	19	0	8	0	0	0	0	0
17	23	0	6	0	0	0	0	0

Scale composition for trend blocks as defined after scaling, mathematics long-term trend assessment, by item type and age: 2008
Age	Multiple choice items			Dichotomously scored constructed-response items			Polytomously scored constructed-response items
Age	Concurrent	Split	Dropped	Concurrent	Split	Dropped	Concurrent polytomous (uncollapsed)	Concurrent dichotomous collapsed	Concurrent polytomous collapsed	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. "Collapsed" denotes items that had categories that were combined and recoded for scaling. 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	84	0	0	29	0	0	0	0	0	0	0
13	97	1	0	26	2	0	0	0	0	0	0
17	99	2	0	24	0	0	0	0	0	0	0

Last updated 03 November 2011 (JL)