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Geography Assessment IRT Parameters

The tables for which links are provided below contain Item Response Theory (IRT) parameters for NAEP geography items that were scaled, as well as the block in which each item appears 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.

Item Response Theory (IRT) parameters tables, geography assessment: 2001 and 2010
Year Assessment Space and place scale Environment and society scale Spatial dynamics and connections scale
2010 National main assessment grade 4 R3 R3 R3
National main assessment grade 8 R3 R3 R3
National main assessment grade 12 R3 R3 R3
2001 National main assessment grade 4 R3 / R2 R3 / R2 R3 / R2
National main assessment grade 8 R3 / R2 R3 / R2 R3 / R2
National main assessment grade 12 R3 / R2 R3 / R2 R3 / R2
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), 2001 and 2010 Geography Assessments.

Last updated 14 March 2016 (GF)