NAEP Technical Documentation Participation, Exclusion, and Accommodation Rates for Grade 8 Writing

The following table displays the school- and student-level response, exclusion, and accommodation rates for the grade 8 writing assessment. Various weights were used in the calculation of the rates, as indicated in the column headings of the table.

The participation rates reflect the participation of the original sample schools only and do not reflect any effect of substitution. The rates weighted by the base weight and enrollment show the approximate proportion of the student population in the school type and geographic region that is represented by the responding schools in the sample. The rates weighted by just the base weight show the proportion of the school population that is represented by the responding schools in the sample. These rates differ because schools differ in size.

Participation, exclusion, and accommodation rates, grade 8 writing national assessment, by school type and geographic region: 2017

School type and geographic region	Number of schools in original sample, rounded	School participation rates (percent) before substitution (weighted by base weight and enrollment)	School participation rates (percent) before substitution (weighted by base weight only)	Number of students sampled, rounded	Weighted percent of students excluded	Weighted student participation rates (percent) after makeups	Weighted percent of students accommodated
All	2,720	92.64	77.14	27,000	1.80	91.21	11.00
National all 1	2,720	92.64	77.14	27,000	1.80	91.21	11.00
Northeast all	430	91.91	74.51	4,000	1.78	89.09	15.56
Midwest all	550	95.17	75.51	5,100	1.58	91.79	10.67
South all	1,080	90.73	78.45	11,100	1.86	92.57	11.38
West all	650	94.02	79.62	6,700	1.94	90.00	7.64
National public	2,100	95.87	92.42	24,700	1.94	91.03	11.37
National private	620	54.30	50.40	2,200	0.16	94.28	6.69
Catholic	180	81.66	87.76	1,200	0.05	95.87	6.40
Non-Catholic	440	33.04	33.80	1,000	0.26	91.75	6.93
1 Includes national public, national private, Bureau of Indian Education, and Department of Defense Education Activity schools located in the United States. NOTE: Numbers of schools are rounded to nearest ten, and numbers of students are rounded to nearest hundred. Detail may not sum to totals due to rounding. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2017 Writing Assessment.

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