NAEP Technical DocumentationTreatment of Items in the Scaling of the 2015 Mathematics Scales

Cluster items created for final scaling, mathematics combined national and state assessment, by grade, subscale, and block: 2015
Grade	Subscale	Block	Item	Reason for decision	Items contributing to cluster
4	Measurement	M3	M3424CL	Created by test development	M342401, M342402, M342403
	Number properties and operations	M5	M2185CL	Created by test development	M218504, M218505
	Algebra	M7	M3468CL	Created by test development	M346801, M346802
	Algebra	M8	M2311CL	Created by test development	M231101, M231102, M231103
	Algebra	M11	M1610CL	Created by test development	M161001, M161002
8	Measurement	M3	M3511CL	Created by test development	M351101, M351102, M351103
	Measurement	M3	M3498CL	Created by test development	M349801, M349802
	Measurement	M6	M3519CL	Created by test development	M351901, M351902
	Number properties and operations	M7	M3566CL	Created by test development	M356601, M356602, M356603
	Geometry	M8	M3173CL	Created by test development	M317301, M317302
	Algebra	M9	M2372CL	Created by test development	M237201, M237202, M237203, M237204
12	Data analysis, probability, and statistics	M1	M1867CL	Created by test development	M186701, M186702
	Algebra	M2	M3059CL	Created by test development	M305901, M305902, M305903
	Measurement and geometry	M3	M1975CL	Created by test development	M197501, M197502, M197503
	Data analysis, probability, and statistics	M4	M1842CL	Created by test development	M184202, M184203, M184204
	Data analysis, probability, and statistics	M4	M1843CL	Created by test development	M184205, M184206
	Measurement and geometry	M8	M1943CL	Created by test development	M194301, M194302
	Measurement and geometry	M10	M1897CL	Created by test development	M189701, M189702, M189703
	Algebra	M11	M1765CL	Created by test development	M176501, M176502, M176503, M176504
	Data analysis, probability, and statistics	M14	M3111CL	Created by test development	M311101, M311102
NOTE: Since 2005, measurement and geometry are combined at grade 12. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2015 Mathematics Assessment.

Recoding of polytomous items for scaling, mathematics combined national and state assessment, by grade, subscale, and block: 2015
Grade	Subscale	Block	Item	Reason for decision	Disposition
4	Number properties and operations	M5	M2185CL	To match 2011 operational scaling	Collapse categories: 0,1,2,3,4 becomes: 0,1,1,2,3
4	Number properties and operations	M11	M161601	Lack of fit	Collapse categories: 0,1,2 becomes: 0,0,1
8	Measurement	M3	M3498CL	Lack of fit	Collapse categories: 0,1,2,3,4 becomes: 0,0,1,2,3
	Algebra	M4	M152602	To match 2011 operational scaling	Collapse categories: 0,1,2,3,4 becomes: 0,1,1,2,3
	Geometry	M8	M3173CL	To match 2013 operational scaling	Collapse categories: 0,1,2,3,4 becomes: 0,1,1,2,2
NOTE: There were no blocks for grade 12. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2015 Mathematics Assessment.

Items scaled separately, mathematics combined national and state assessment, by subscale, block, and grade: 2015
Grade	Subscale	Block	Item	Type
4	Number properties and operations	M11	M161601	Polytomously-scored constructed response
12	Measurement and geometry	M5	M185701	Multiple choice
NOTE: Since 2005, measurement and geometry are combined at grade 12. There were no blocks for grade 8. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2015 Mathematics Assessment.

Last updated 17 November 2021 (ML)

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