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 4 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)	96	96	95	95	7,800	93	142,700
Alabama	100	100	100	100	100	95	2,600
Arizona	100	100	100	100	100	93	2,800
Arkansas	100	100	100	100	200	93	2,800
California	100	100	99	99	400	94	10,600
Colorado	98	98	99	99	100	94	2,700
Connecticut	100	100	100	100	100	94	2,800
Delaware	100	100	100	100	100	93	2,600
Florida	100	100	100	100	200	93	4,400
Georgia	100	100	100	100	200	94	4,200
Hawaii	100	100	100	100	100	95	2,800
Idaho	100	100	100	100	200	95	2,900
Illinois	97	97	97	97	200	93	4,100
Indiana	100	100	100	100	100	94	2,700
Kentucky	100	100	100	100	100	94	2,800
Louisiana	100	100	100	100	100	94	2,700
Maine	100	100	99	99	200	94	2,600
Maryland	99	99	99	99	100	94	2,800
Massachusetts	100	100	100	100	200	94	3,900
Michigan	99	99	99	99	100	94	2,500
Minnesota	97	97	98	98	100	95	2,600
Mississippi	100	100	100	100	100	95	2,800
Missouri	100	100	100	100	200	93	2,700
Montana	98	98	98	98	300	94	2,700
Nevada	100	100	100	100	100	93	2,900
New Hampshire	97	97	99	99	200	93	2,600
New Jersey	98	98	98	98	100	93	2,800
New Mexico	100	100	100	100	200	93	2,800
North Carolina	100	100	100	100	200	95	4,100
North Dakota	100	100	100	100	300	96	2,200
Ohio	100	100	100	100	200	93	3,500
Oklahoma	100	100	100	100	200	95	2,700
Oregon	100	100	99	99	200	94	2,700
Rhode Island	100	100	100	100	100	93	2,700
South Carolina	100	100	100	100	100	94	2,800
South Dakota	100	100	100	100	300	95	2,800
Tennessee	100	100	100	100	100	93	2,800
Texas	100	100	100	100	400	94	8,300
Utah	100	100	100	100	100	95	2,900
Vermont	100	100	100	100	200	93	2,000
Virginia	99	99	99	99	100	94	2,800
Washington	100	100	100	100	100	93	2,800
West Virginia	100	100	100	100	200	94	2,700
Wisconsin	97	97	97	97	200	94	2,600
Wyoming	100	100	99	99	200	95	1,800
Other jurisdiction
DoDEA1	100	100	99	99	100	93	2,400
¹ Department of Defense Education Activity.
NOTE: Detail may not sum to total because of rounding. The numbers of schools and students are rounded to the nearest hundred. 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).

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).