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Download full textWestine, Carl; Spybrook, Jessaca – Society for Research on Educational Effectiveness, 2013
The capacity of the field to conduct power analyses for group randomized trials (GRTs) of educational interventions has improved over the past decade (Authors, 2009). However, a power analysis depends on estimates of design parameters. Hence it is critical to build the empirical base of design parameters for GRTs across a variety of outcomes and…
Descriptors: Randomized Controlled Trials, Research Design, Correlation, Program Effectiveness
Direct linkChávez, Óscar; Tarr, James E.; Grouws, Douglas A.; Soria, Victor M. – International Journal of Science and Mathematics Education, 2015
We examined the effect of curriculum organization in US high schools where students could freely choose to study mathematics from textbooks that employed one of two types of content organization, an "integrated" approach or a (traditional) "subject-specific" approach. The study involved 2,242 high school students, enrolled in…
Descriptors: Mathematics Instruction, Mathematics Curriculum, High Schools, Textbooks
Early, Diane M.; Rogge, Ronald D.; Deci, Edward L. – High School Journal, 2014
This paper investigates engagement (E), alignment (A), and rigor (R) as vital signs of high-quality teacher instruction as measured by the EAR Classroom Visit Protocol, designed by the Institute for Research and Reform in Education (IRRE). Findings indicated that both school leaders and outside raters could learn to score the protocol with…
Descriptors: Educational Quality, Learner Engagement, Alignment (Education), Difficulty Level
