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Long-Term Trend Sampling of Schools and Students


School Sampling Frame

Stratification of Schools

School Sample Selection

Substitute Schools

Ineligible Schools

Student Sampling

Response Experience


The school sample was drawn from a sampling frame that only included the sampled long-term trend primary sampling units (PSUs). The measures of size for the schools on this frame included the inverse PSU probability of selection, to account for that stage of sampling. The school sample frame was stratified, and a systematic sample drawn. A sample of students was drawn within each eligible, responding school.




Last updated 27 October 2009 (GF)

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