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| Duncan, Ann | 1 |
| Perkins, Kyle | 1 |
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| Reports - Descriptive | 1 |
| Reports - Evaluative | 1 |
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Perkins, Kyle; Duncan, Ann – 1988
An item discriminability study of the Iowa Tests of Basic Skills Language Skills tests identified test items that are robust discriminators, psychometrically capable of separating low scorers from higher scorers in the language tests battery. The analysis was conducted by calculating a point-biserial correlation for each item on the four language…
Descriptors: Correlation, Item Analysis, Language Skills, Language Tests
Riverside Publishing Co., Chicago. IL. – 1990
The Iowa Tests of Basic Skills (ITBS), here summarized for administrators, are intended to provide information about the skills development of individual students and about relative strengths and weaknesses of the instructional program. The ITBS represents the first comprehensive elementary school and secondary school statewide testing program in…
Descriptors: Achievement Tests, Basic Skills, Curriculum Evaluation, Educational Assessment
