NAEP Technical DocumentationGeography 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.

Links to item response theory (IRT) parameters, geography national assessments, by subscale and grade: 2001, 2010 and 2014

Year	Grade	Space and place subscale	Environment and society subscale	Spatial dynamics and connections subscale
2014	8	R3	R3	R3
2010	4	R3	R3	R3
	8	R3	R3	R3
	12	R3	R3	R3
2001	4	R3 / R2	R3 / R2	R3 / R2
	8	R3 / R2	R3 / R2	R3 / R2
	12	R3 / R2	R3 / R2	R3 / R2
NOTE: R2 is the non-accommodated reporting sample; R3 is the accommodated reporting sample. If sampled students are classified as students with disabilities (SD) or English language learners (ELL), and school officials, using NAEP guidelines, determine that they can meaningfully participate in the NAEP assessment with accommodation, those students are included in the NAEP assessment with accommodation along with other sampled students including SD/ELL students who do not need accommodations. The R3 sample is more inclusive than the R2 sample type and excludes a smaller proportion of sampled students. The R3 sample is the only reporting sample used in NAEP after 2001. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2001, 2010 and 2014 Geography Assessments.

Printer-friendly Version