This report is the technical documentation behind an earlier released report, "Linking the National Assessment of Educational Progress (NAEP) and The Third International Mathematics and Science Study (TIMSS): Eighth-Grade Results", which concerns the linking of NAEP results to TIMSS results for grade 8 mathematics and science. The purpose of this report is not to provide scores, but to describe the methods used to undertake such a link using the available data. The specific direction of the link was to link NAEP to TIMSS, thereby providing predicted TIMSS results for given NAEP results. A major goal of the link is to enable comparisons between states and countries.
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