NAEP Analysis and Scaling → Initial Activities → Constructed-Response Interrater Reliability → Range of Response Codes, Percent Agreement, and Cohen's Kappa or Intraclass Correlation for the Constructed-Response Items From Previous Years, Rescored in 2012, Age 13 Mathematics Long-Term Trend Assessment, by Item and Block: 2012

NAEP Technical DocumentationScore range and percent agreement for the constructed-response items from the previous year assessed that were rescored in 2012, age 13 mathematics long-term trend assessment, by item and block: 2012

Block	Item	Range of response codes	Sample size	Percent exact agreement
NOTE: Special codes assigned to student responses including blank, off-task, and not-scorable were included in the calculation of the percent exact agreement measure. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2012 Mathematics Long-Term Trend Assessment.
MB	N301801	1-2	800	100
	N302401	1-2	800	99
	N302601	1-2	800	99
	N302901	1-2	800	100
	N303201	1-2	800	100
MC	N322401	1-2	800	100
	N324301	1-2	800	99
	N325001	1-2	800	99
	N325301	1-2	800	99
	N325601	1-2	800	99
	N325701	1-2	800	99
	N326001	1-2	800	99
	N326401	1-2	800	100
MD	N316601	1-2	800	100
	N316602	1-2	800	100
	N316603	1-2	800	99
	N316701	1-2	800	100
	N317101	1-2	800	99
	N317102	1-2	800	99
	N317103	1-2	800	99
	N318801	1-2	800	99
ME	N288101	1-2	800	100
	N296401	1-2	800	99
	N296701	1-2	800	99
	N296901	1-2	800	99
	N297001	1-2	800	99
MF	N289901	1-2	800	100
	N290101	1-2	800	100
	N298201	1-2	800	99
	N298601	1-2	800	98
	N299001	1-2	800	99

Score range and Cohen's Kappa or intraclass correlation for the constructed-response items from previous years that were rescored in 2012, age 13 mathematics long-term trend assessment, by item and block: 2012

Block	Item	Range of response codes	Sample size	Cohen’s Kappa	Intraclass correlation
† Not applicable. The intraclass correlation is not reported for dichotomously scored items; Cohen’s Kappa is not reported for polytomously scored items. NOTE: Cohen's Kappa is a measure of reliability that is used for items that are dichotomously scored. The intraclass correlation is used for items with more than two categories. The discrepancy in sample sizes compared to the first table is due to the fact that percent agreement is calculated from the entire sample size, while Cohen's Kappa and intraclass correlation statistics exclude those who omit the item. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2012 Mathematics Long-Term Trend Assessment.
MB	N301801	1-2	800	1.00	†
	N302401	1-2	700	0.99	†
	N302601	1-2	700	0.99	†
	N302901	1-2	700	0.98	†
	N303201	1-2	800	1.00	†
MC	N322401	1-2	800	0.99	†
	N324301	1-2	800	0.99	†
	N325001	1-2	800	0.99	†
	N325301	1-2	800	0.97	†
	N325601	1-2	700	0.97	†
	N325701	1-2	700	0.98	†
	N326001	1-2	700	1.00	†
	N326401	1-2	700	1.00	†
MD	N316601	1-2	800	0.98	†
	N316602	1-2	800	1.00	†
	N316603	1-2	800	0.97	†
	N316701	1-2	800	0.99	†
	N317101	1-2	800	0.99	†
	N317102	1-2	700	0.99	†
	N317103	1-2	700	0.99	†
	N318801	1-2	700	0.97	†
ME	N288101	1-2	800	0.99	†
	N296401	1-2	800	0.99	†
	N296701	1-2	800	0.98	†
	N296901	1-2	800	0.99	†
	N297001	1-2	800	0.99	†
MF	N289901	1-2	800	0.99	†
	N290101	1-2	800	0.99	†
	N298201	1-2	800	0.98	†
	N298601	1-2	800	0.97	†
	N299001	1-2	800	0.98	†

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