Embedding Questions The Pursuit of a Common Measure in Uncommon Tests (1999) / Chapter Skim
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Conclusions
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Pages 62-66
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From page 62... ...
The national scores could be obtained either with or without statistical linkage between the embeciclec3 material and the questions in the state assessment. CONCLUSION 1: Embedding part of a national assessment in state assessments will not provide valid, reliable, and comparable national scores for individual students as long as there are ( 1 )
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From page 63... ...
Inferences about incliviclual performance from embeciclec3 test material similarly could be substantially clistortec3 by many differences between the national anc3 state testing program in administration anc3 context, regardless of the characteristics of the two tests anc3 the embeciclec3 items. Uncler the rubric of "administration anc3 context" we include: differences in the time of year at which the test is aciministerec3; differences in test context (i.e., the surrounding test material)
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From page 64... ...
In Ur~commorr Measures (National Research Council, 1999c) , this problem was cliscussec3 in terms of the instability of linkages, but it extends beyond linking anc3 can affect inferences from embeciclec3 material even in the absence of statistical linkage.
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From page 65... ...
This approach provides both national and state scores for individual students and may reduce students' testing burdens relative to the administration of two overlapping tests. This approach assumes that the state items are neither physically embeciclec3 in the national test nor aciministerec3 at precisely the same time and therefore will not generate context effects that alter perfor' mance on the national test.
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From page 66... ...
This is a relatively undemanding inference, however, because it does not necessarily imply that the state and national assessments are actually measuring similar things or that the particular individuals or schools that score well on one would consistently score well on the other. In other wows, it does not entail estimating performance on the national test that is not fully administered.
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