Page Title:
Skip Navigation
NAEP Analysis and Scaling → Estimation of NAEP Score Scales → NAEP Assessment IRT Parameters → IRT Parameters for the Mathematics Long-Term Trend Assessments

Mathematics Long-Term Trend Assessment IRT Parameters

The links provided below contain 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.

Links to mathematics long-term trend IRT parameters for 2004, 2008 and 2012
Year Assessment Age 9 Age 13 Age 17
2012 Long-term trend assessment R3 R3 R3
2008 Long-term trend assessment R3 R3 R3
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, 2008, and 2012 Mathematics Long-Term Trend Assessments.

Last updated 01 July 2014 (GF)