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NAEP Assessment Weighting Procedures → Weighting Procedures for the 2005 Assessment → Quality Control for the 2005 Assessment Weighting → Main Quality Control Findings of Interest: Final Participation, Exclusion, and Accommodation Rates for the 2005 Assessment → Response, Exclusion, and Accomodation Rates for Grade 8 Science Bridge Assessment in 2005

NAEP Technical DocumentationResponse, Exclusion, and Accommodation Rates for Grade 8 Science Bridge Assessment in 2005

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

Response, exclusion, and accommodation rates, grade 8 science bridge assessment, by school type: 2005

School type	Number of schools in the 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)	School participation rates (percent) after substitution (weighted by base weight and enrollment)	School participation rates (percent) after substitution (weighted by base weight only)	Number of students sampled, rounded	Weighted percent of students excluded	Weighted student participation rates (percent) after make-ups	Weighted percent of assessed students accommodated
National all1	930	94.94	84.99	96.63	89.21	20,900	3.18	91.02	7.55
National public	690	97.97	98.30	98.29	98.45	19,300	3.51	90.71	8.13
National private	250	67.98	70.32	81.87	79.04	1,600	0.07	94.60	1.51
Catholic	60	74.32	74.42	91.12	86.68	700	0.15	94.24	1.03
Non-Catholic private	180	61.81	68.54	72.88	75.73	800	0.00	95.01	1.95
1 Includes national public and national private schools. NOTE: Numbers of schools are rounded to nearest ten, and numbers of students are rounded to nearest hundred. Detail may not sum to totals because of rounding. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2005 Science Bridge Assessment.

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