NAEP Technical DocumentationTreatment of Items in the Scaling of the 2004 Mathematics Long-Term Trend Assessment Scales

Items deleted from the final scaling, mathematics long-term trend assessment, by age: 2004
Age	Block	NAEP ID	Reason for decision
9	M23	N311702	Poor fit
9	M23	N312301	Poor fit
13	M22	N303001	Bridge assessment decision
	M24	N318101	Poor fit
	MX52	N299401	Poor fit
17	M22	N308701	Poor fit
17	MX52	N299401	Poor fit
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.

Cluster items created for final scaling, mathematics long-term trend assessment, age 9: 2004
Age	Block	NAEP ID	Reason for Decision	NAEP IDs for Items Contributing to Cluster
9	MX52	N2909CL	Strong local dependence	N290901, N291001
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.

Recoding of polytomous items for scaling, mathematics long-term trend assessment, age 9: 2004
Age	Block	NAEP ID	Reason for decision	Disposition
9	MX52	N2909CL	Poor fit	Collapsed categories: 0,1,2 becomes 0,0,1
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.

Last updated 01 April 2009 (GF)