NAEP 2005 Assessment Results - Science: State Participation Rates

State Participation Rate Tables

Science

School and Student Participation Rates

In order to ensure unbiased samples, NCES and NAGB established participation rate standards that states and jurisdictions were required to meet in order for their results to be reported. Participation rates for the original sample needed to be at least 85 percent for schools. In the 2005 science assessment, 44 states and all Department of Defense schools met participation rate standards at both grades 4 and 8. Student response rates at grade 12 fell below 85 percent for both public and private schools. A nonresponse bias analysis showed significant differences between responding and nonresponding public school students in terms of gender, race/ethnicity, age, and English language learner identification. Although the differences are quite small, it is unlikely that nonresponse weighting adjustments completely accounted for these differences.

Grade 4

Grade 8

School and student participation rates in science for grade 8 public schools, by state: 2005
State/jurisdiction	Percent before substitution	Percent after substitution	Percent before substitution	Percent after substitution	Number of schools participating after substitution	Student-weighted percent	Number of students assessed
	School participation					Student participation
	Student-weighted		School-weighted
Nation (public)	97	97	96	96	5,800	90	139,000
Alabama	100	100	100	100	100	92	2,300
Arizona	100	100	100	100	100	89	2,800
Arkansas	100	100	100	100	100	92	2,800
California	99	99	98	98	400	91	9,900
Colorado	98	98	99	99	100	90	2,500
Connecticut	100	100	100	100	100	90	2,700
Delaware	100	100	100	100	< 50	89	2,700
Florida	100	100	96	96	200	90	3,900
Georgia	100	100	100	100	100	93	3,900
Hawaii	100	100	100	100	100	88	2,700
Idaho	100	100	100	100	100	93	2,900
Illinois	98	98	99	99	200	91	4,000
Indiana	98	98	99	99	100	92	2,700
Kentucky	100	100	100	100	100	93	2,900
Louisiana	100	100	100	100	100	90	2,400
Maine	98	98	100	100	100	90	2,500
Maryland	99	99	99	99	100	87	2,600
Massachusetts	97	97	94	94	100	90	3,600
Michigan	100	100	100	100	100	88	2,400
Minnesota	98	98	99	99	100	87	2,500
Mississippi	100	100	100	100	100	91	2,700
Missouri	100	100	100	100	100	91	2,800
Montana	98	98	96	96	200	92	2,700
Nevada	100	100	100	100	100	89	2,800
New Hampshire	96	96	99	99	100	89	2,500
New Jersey	99	99	98	98	100	89	2,600
New Mexico	100	100	98	98	100	91	2,700
North Carolina	100	100	100	100	100	91	4,000
North Dakota	100	100	99	99	200	95	2,500
Ohio	100	100	100	100	100	89	3,400
Oklahoma	100	100	100	100	100	91	2,600
Oregon	100	100	100	100	100	91	2,600
Rhode Island	100	100	100	100	100	92	2,800
South Carolina	100	100	100	100	100	93	2,700
South Dakota	100	100	100	100	200	94	2,800
Tennessee	100	100	100	100	100	91	2,500
Texas	100	100	100	100	300	92	8,100
Utah	100	100	100	100	100	92	2,900
Vermont	100	100	100	100	100	91	2,300
Virginia	100	100	100	100	100	92	2,700
Washington	100	100	98	98	100	90	2,700
West Virginia	100	100	100	100	100	91	2,600
Wisconsin	96	96	96	96	100	91	2,600
Wyoming	100	100	100	100	100	91	2,100
Other jurisdiction
DoDEA1	100	100	99	99	100	94	1,800
1 Department of Defense Education Activity.
NOTE: The numbers of schools and students are rounded to the nearest hundred, or indicated as < 50 where the value was between 1 and 49. States not shown did not participate in the state assessment (such as New York), but may nevertheless have had a few schools participating to provide data for the national sample (but not enough for a representative state sample).
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2005 Science Assessment.

In carrying out the 2005 state assessment program, the National Center for Education Statistics (NCES) and the National Assessment Governing Board (NAGB) established participation rate standards that jurisdictions were required to meet in order for their results to be reported. Participation rates for the original sample needed to be at least 85 percent for schools in order to meet reporting requirements. In the 2005 science assessment, all 44 states and the Department of Defense schools met NAEP participation rate standards at both grades 4 and 8.

Results of the 2005 state assessment in science are based on state-level samples of fourth- and eighth-grade public school students. The samples were selected using a two-stage sample design that first selected schools within each participating state or other jurisdiction and then selected students within schools. The samples were weighted to allow valid inferences about the populations of interest. Participation rates for the states and other jurisdictions were calculated the same way as for the national participation rates. The tables above display weighted school and student participation rates for the state samples at grades 4 and 8, respectively. While state participation in the NAEP biennial reading and mathematics assessments is federally mandated, participation in the 2005 science assessment was voluntary. Several jurisdictions chose not to participate in the NAEP state science assessment in 2005; state-level samples were not drawn for these jurisdictions. These non-participating jurisdictions included Alaska, Iowa, Kansas, Nebraska, New York, Pennsylvania, and the District of Columbia (due to insufficient sample size).