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Grossman, Pam; Cohen, Julie; Ronfeldt, Matthew; Brown, Lindsay – Educational Researcher, 2014
In this study, we examined how the relationships between one observation protocol, the Protocol for Language Arts Teaching Observation (PLATO), and value-added measures shift when different tests are used to assess student achievement. Using data from the Measures of Effective Teaching Project, we found that PLATO was more strongly related to the…
Descriptors: Classroom Observation Techniques, Scores, Language Arts, Academic Achievement
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Phillips, S. E.; Mehrens, William A. – Journal of Educational Measurement, 1987
This study investigates whether a linear factor analytic method commonly used to evaluate violation of the item response theory (IRT) unidimensionality assumption is sensitive to measurable curricular differences within a school district and to examine the possibility of differential item performance for groups of students receiving different…
Descriptors: Achievement Tests, Elementary Education, Elementary School Curriculum, Factor Analysis