NAEP Assessment Sample Design → NAEP 2012 Sample Design → 2012 Long-Term Trend (LTT) Assessment Sample Design → 2012 Private School Long-Term Trend (LTT) Assessment → Target Population of the 2012 Private School Long-Term Trend (LTT) Assessment

NAEP Technical DocumentationTarget Population of the 2012 Private School Long-Term Trend (LTT) Assessment

The target population for the 2012 private school long-term trend assessment included all students in three age populations (9, 13, and 17) who were enrolled in private schools. The sample frame included private schools in the 50 states and the District of Columbia.

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