NAEP Assessment Sample Design → NAEP 2009 Sample Design → Sample Design for the 2009 National Assessment → 2009 Private School National Assessment → Student Sample Selection for the 2009 Private School National Assessment

NAEP Technical DocumentationStudent Sample Selection for the 2009 Private School National Assessment

The target student sample sizes within sampled schools varied by grade. For the fourth and eighth grades, the target was 90 students. However, schools with 102 or fewer students automatically had all students sampled. In addition, at grade 4 only, a school that had more than 102 students but fewer than 121 could choose to have all students sampled. For schools sampled for the twelfth grade the target was 150 students. However, schools with 170 or fewer students had all students sampled.

There was only one spiral type for each grade. The percentage of booklets by subject within the spiral for each grade is given below.

Percentage of booklets by subject within the spiral for the private school national assessment, by grade: 2009

Grade	Mathematics	Reading	Science
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2009 National Assessment.
4	32.37	35.36	32.27
8	33.24	33.53	33.23
12	38.46	42.65	18.89

The process of list submission, sampling students from year-round schools, sampling new enrollees, and determining student eligibility and exclusion status was the same as for the state NAEP student sample.

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