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NAEP Technical DocumentationResponse Rates of Twelfth-Grade School Sample by Participating States for the 2009 State Assessment

The following table presents unweighted counts and weighted response rates at grade 12 for sampled eligible and participating schools.The weighted response rates use the student enrollment from the sample frame divided by the school probability of selection. The weighted aggregation for the eligible schools for each jurisdiction is an estimate of the total population of students in the grade within each jurisdiction.

Unweighted and weighted response rate of sample-eligible schools, grade 12 state assessment, by jurisdiction: 2009

Jurisdiction	Number of sample eligible schools	Number of participating schools	Weighted school response rates (percent)
NOTE: School counts are rounded to nearest ten. Percentages are based on unrounded counts. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2009 Assessment.
Arkansas	100	100	100.00
Connecticut	100	100	100.00
Florida	80	80	100.00
Idaho	100	100	100.00
Illinois	90	80	84.50
Iowa	120	120	100.00
Massachusetts	90	90	100.00
New Hampshire	60	60	91.55
New Jersey	90	90	98.93
South Dakota	130	130	100.00
West Virginia	90	90	100.00

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