NAEP Technical DocumentationParticipation, Exclusion, and Accommodation Rates for Grade 8 Science

The following table displays the school- and student-level response, exclusion, and accommodation rates for the grade 8 science 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 jurisdiction 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 science assessment, by school type and geographic region: 2009
School type and geographic region	Number of schools in original sample	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	Weighted percentage of students excluded	Weighted student participation rates (percent) after makeups	Weighted percentage of students accommodated
— Not available. ¹ Includes national public, national private, and Bureau of Indian Education schools located in the United States and all Department of Defense Education Activity schools. ² Department of Defense Education Activity. 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), 2009 Science Assessment.
All	7,960	97.25	87.39	177,400	1.90	92.59	9.82
National all¹	7,960	97.25	87.39	177,400	1.90	92.59	9.82
Northeast all	1,260	94.41	79.70	29,400	1.94	91.41	14.07
Midwest all	2,270	97.62	87.67	37,200	1.82	93.38	10.16
South all	2,420	98.09	91.38	64,500	2.06	92.64	9.49
West all	1,950	97.63	87.62	44,800	1.67	92.60	7.03
National public	7,220	99.71	99.68	172,000	2.03	92.41	10.36
Alabama	120	100.00	100.00	3,100	1.30	93.20	3.02
Alaska	—	—	—	—	—	—	—
Arizona	140	100.00	100.00	3,400	2.11	92.50	9.17
Arkansas	130	100.00	100.00	3,200	1.25	92.78	11.44
California	260	100.00	100.00	8,400	1.67	93.00	5.96
Colorado	130	100.00	100.00	3,200	1.42	91.99	10.62
Connecticut	120	100.00	100.00	3,200	1.61	90.80	11.14
Delaware	60	100.00	100.00	3,300	1.28	91.38	14.05
District of Columbia	—	—	—	—	—	—	—
Florida	170	100.00	100.00	5,100	1.72	90.77	15.84
Georgia	120	100.00	100.00	4,200	1.46	94.35	9.59
Hawaii	80	100.00	100.00	3,300	1.74	90.75	10.36
Idaho	120	100.00	100.00	3,400	1.23	94.02	7.08
Illinois	220	100.00	100.00	4,700	1.47	93.59	11.89
Indiana	110	100.00	100.00	3,100	2.11	92.81	11.61
Iowa	140	100.00	100.00	3,000	1.16	93.17	12.49
Kansas	—	—	—	—	—	—	—
Kentucky	150	100.00	100.00	4,300	2.47	93.91	8.57
Louisiana	160	100.00	100.00	3,100	1.42	91.73	11.99
Maine	140	100.00	100.00	3,100	1.57	90.87	13.72
Maryland	150	100.00	100.00	4,000	2.51	92.14	10.50
Massachusetts	140	100.00	100.00	4,300	3.50	91.84	14.27
Michigan	170	100.00	100.00	4,200	2.46	91.69	8.76
Minnesota	170	100.00	100.00	3,400	2.32	93.30	8.62
Mississippi	120	100.00	100.00	3,300	1.01	93.39	7.26
Missouri	130	100.00	100.00	3,100	1.19	92.93	9.52
Montana	190	99.82	98.28	3,000	1.95	92.41	9.16
Nebraska	—	—	—	—	—	—	—
Nevada	90	100.00	100.00	3,500	1.36	90.88	10.47
New Hampshire	100	96.18	95.87	3,000	2.11	89.47	14.03
New Jersey	120	100.00	100.00	3,200	2.16	93.12	14.38
New Mexico	120	100.00	100.00	3,100	3.30	89.36	10.50
New York	170	97.12	98.25	4,500	1.81	89.76	17.15
North Carolina	160	100.00	100.00	5,200	1.65	91.82	12.53
North Dakota	220	100.00	100.00	2,500	4.08	95.13	8.93
Ohio	200	100.00	100.00	4,300	2.36	92.69	11.71
Oklahoma	150	100.00	100.00	3,200	3.37	93.06	10.25
Oregon	140	100.00	100.00	3,400	1.71	91.93	8.53
Pennsylvania	160	100.00	100.00	4,200	1.59	92.36	14.82
Rhode Island	60	100.00	100.00	3,100	2.83	92.77	13.61
South Carolina	110	100.00	100.00	3,400	2.12	93.84	9.20
South Dakota	280	100.00	100.00	3,200	1.26	94.96	7.18
Tennessee	120	100.00	100.00	3,400	1.61	93.24	9.29
Texas	190	99.06	99.61	7,100	3.57	92.21	6.72
Utah	130	100.00	100.00	3,500	1.62	91.63	8.46
Vermont	—	—	—	—	—	—	—
Virginia	110	100.00	100.00	3,300	1.78	93.05	10.54
Washington	140	100.00	100.00	3,400	2.13	91.61	7.30
West Virginia	120	100.00	100.00	3,400	1.57	92.58	9.84
Wisconsin	190	99.16	98.83	4,100	2.23	92.99	12.88
Wyoming	110	100.00	100.00	2,200	1.50	90.93	10.26
Atlanta	20	100.00	100.00	1,100	0.77	91.46	9.47
Austin	20	100.00	100.00	1,700	4.81	88.43	9.88
Baltimore City	50	100.00	100.00	1,200	3.07	89.56	14.03
Boston	40	100.00	100.00	1,300	6.99	90.79	19.38
Charlotte	40	100.00	100.00	1,700	2.95	91.10	9.62
Chicago	110	100.00	100.00	2,100	2.74	93.92	14.67
Cleveland	80	100.00	100.00	1,300	9.00	89.32	17.33
Detroit	60	100.00	100.00	1,400	4.07	84.29	11.76
Fresno	20	100.00	100.00	1,600	2.29	92.16	6.55
Houston	50	100.00	100.00	2,400	4.10	91.89	8.41
Jefferson County, KY	40	100.00	100.00	1,700	2.59	91.15	8.63
Los Angeles	80	100.00	100.00	2,400	2.38	91.17	6.92
Miami	70	100.00	100.00	2,300	2.58	92.92	16.47
Milwaukee	70	100.00	100.00	1,300	5.04	86.75	18.82
New York City	90	100.00	100.00	2,500	2.16	88.10	19.69
Philadelphia	60	100.00	100.00	1,500	2.52	91.61	17.87
San Diego	30	100.00	100.00	1,200	3.34	93.12	5.72
District of Columbia (TUDA)	40	100.00	100.00	100	4.69	89.62	11.79
Charter school	290	99.96	99.86	4,000	1.15	92.75	9.06
Bureau of Indian Education	—	—	—	—	—	—	—
DoDEA²	80	99.08	96.83	2,000	2.01	92.80	7.45
National private	540	72.05	67.73	3,300	0.47	94.90	4.10
Catholic	170	86.44	88.88	1,600	0.29	95.14	3.63
Non-Catholic private	370	57.98	55.79	1,700	0.65	94.58	4.58

Last updated 02 August 2010 (JL)

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