NAEP Technical DocumentationIneligible Public Schools for the 2009 Science HOT and ICT Assessments

The Common Core of Data (CCD) public school file from which most of the sampled schools were drawn corresponds to the 2005-2006 school year, 3 years prior to the assessment school year. During the intervening period, some of these schools either closed, no longer offered the grade of interest, or became ineligible for other reasons. In such cases, the sampled schools were considered to be ineligible.

The table below presents unweighted counts of sampled public schools by grade and eligibility status, including the reason for ineligibility.

Number of sampled public schools, by eligibility status and grade: 2009
Eligibility status	Unweighted count of schools	Unweighted percentage
NOTE: Total and eligible school counts are rounded to nearest ten. Percentages are based on rounded counts. Detail may not add up to totals due to 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 fourth-grade sampled public schools	340	100.00
Eligible schools	320	94.12
No eligible students in grade	1	0.29
Does not have grade	2	0.59
School closed	7	2.06
Not a regular school	2	0.59
Other ineligible school	0	0.00
Duplicate on sampling frame	0	0.00
All eighth-grade sampled public schools	340	100.00
Eligible schools	340	100.00
No eligible students in grade	0	0.00
Does not have grade	2	0.59
School closed	2	0.59
Not a regular school	2	0.59
Other ineligible school	0	0.00
Duplicate on sampling frame	0	0.00
All twelfth-grade sampled public schools	220	100.00
Eligible schools	200	90.91
No eligible students in grade	0	0.00
Does not have grade	1	0.45
School closed	3	1.36
Not a regular school	11	5.00
Other ineligible school	0	0.00
Duplicate on sampling frame	0	0.00

Last updated 31 March 2010 (JL)

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