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Mathematics Assessment IRT Parameters

The table below contains links to Item Response Theory (IRT) parameters for NAEP mathematics items that were scaled, as well as the block in which each item appeared for each grade (Block) and the position of each item within its block (Item). Note that these item parameters are provided in the metrics used for the original calibration of the scales.

Mathematics Item Reponse Theory (IRT) parameters tables, NAEP assessments: 2000–2007
Year Assessment Number sense, properties, and operations scale Measurement scale Geometry and spatial sense scale Data analysis, statistics, and probability scale Algebra and functions scale
2007 Combined national and state main assessment grade 4 R3 R3 R3 R3 R3
Combined national and state main assessment grade 8 R3 R3 R3 R3 R3
2005 Combined national and state main assessment grade 4 R3 R3 R3 R3 R3
Combined national and state main assessment grade 8 R3 R3 R3 R3 R3
National main assessment grade 121 R3 R3 R3 R3
2003 Combined national and state main assessment grade 4 R3 R3 R3 R3 R3
Combined national and state main assessment grade 8 R3 R3 R3 R3 R3
2000 National main assessment grade 4 R3 / R2 R3 / R2 R3 / R2 R3 / R2 R3 / R2
National main assessment grade 8 R3 / R2 R3 / R2 R3 / R2 R3 / R2 R3 / R2
National main assessment grade 12 R3 / R2 R3 / R2 R3 / R2 R3 / R2 R3 / R2
State assessment grade 4 R3 / R2 R3 / R2 R3 / R2 R3 / R2 R3 / R2
State assessment grade 8 R3 / R2 R3 / R2 R3 / R2 R3 / R2 R3 / R2
1 The two subscales were combined for scaling for grade 12.
NOTE: R2 refers to accommodations not offered; R3 refers to accommodations offered to students with disabilities (SD) and English language learners (ELL) participating in the NAEP assessment.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2000 - 2007 Mathematics Assessments.

 

Mathematics Long-Term Trend Assessment IRT Parameters

The table below contains links to Item Response Theory (IRT) parameters for NAEP mathematics long-term trend items that were scaled, as well as the block in which each item appears for each age group and the position of each item within its block. Note that these item parameters are provided in the metrics used for the original univariate scale.

Mathematics long-term trend parameters tables, NAEP assessments: 2004 
Year Assessment Age 9 Age 13 Age 17
2004 Long-term trend assessment R3 R3 R3
Long-term trend bridge study assessment R3 R3 R3
NOTE: R3 refers to accommodations offered to students with disabilities (SD) and English language learners (ELL) participating in the NAEP assessment.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2004 Mathematics Assessments.

Last updated 23 June 2010 (GF)

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National Center for Education Statistics - http://nces.ed.gov
U.S. Department of Education