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Li, Wei; Konstantopoulos, Spyros – Society for Research on Educational Effectiveness, 2016
The purpose of this study is extend previous methods by Raudenbush and Liu (2001) and Spybrook et al. (2011), and provide methods for power analysis of tests of treatment effects in studies of polynomial change with two levels of nesting (e.g., students and schools) where the treatment is either at the third level (e.g., school intervention) or at…
Descriptors: Growth Models, Statistical Analysis, Change, Outcomes of Treatment
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Hofer, Kerry G. – Society for Research on Educational Effectiveness, 2014
This paper presents evidence on the amount of classroom variation in gains across various domains of achievement within the Tennessee Voluntary Pre-Kindergarten (TN-VPK) program; the data are taken from the randomized control trial (RCT) design of the TN-VPK evaluation. This study explores areas where those differences are largest, and offers…
Descriptors: Preschool Education, Preschool Children, Achievement Gains, Randomized Controlled Trials
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Early, Diane M.; Berg, Juliette K.; Alicea, Stacey; Si, Yajuan; Aber, J. Lawrence; Ryan, Richard M.; Deci, Edward L. – Journal of Research on Educational Effectiveness, 2016
Every Classroom, Every Day (ECED) is a set of instructional improvement interventions designed to increase student achievement in math and English/language arts (ELA). ECED includes three primary components: (a) systematic classroom observations by school leaders, (b) intensive professional development and support for math teachers and…
Descriptors: Instructional Improvement, Intervention, Mathematics Achievement, Language Arts