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Effects of Off-Level Assignment on ITBS Grade Equivalent Scores.
Applebaum, Wayne R. – 1979
The Rasch model was used to compare the grade equivalent scores which students of equal ability would have obtained, had they taken different levels of the Iowa Tests of Basic Skills (ITBS). Raw scores on items common to levels 9-14 of the ITBS (vocabulary subtest) were obtained from 6,000 students in Dallas, Texas. Rasch scales were used to…
Descriptors: Academic Ability, Achievement Tests, Educational Testing, Equated Scores
The Comparability of Equal Raw Scores Obtained from In-Level and Out-Of-Level Testing: One Source of the Discrepancy between In-Level and Out-of-Level Grade Equivalent Scores.
Peer reviewed Peer reviewed
Plake, Barbara S.; Hoover, H. D. – Journal of Educational Measurement, 1979
An experiment investigated the extent to which the results of out-of-level testing may be biased because the child given an out of level test may have had a significantly different curriculum than the children given in-level tests. Item analysis data suggested this was unlikely. (CTM)
Descriptors: Achievement Tests, Elementary Education, Elementary School Curriculum, Grade Equivalent Scores