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Tipton, Elizabeth; Matlen, Bryan J. – American Journal of Evaluation, 2019
Randomized control trials (RCTs) have long been considered the "gold standard" for evaluating the impacts of interventions. However, in most education RCTs, the sample of schools included is recruited based on convenience, potentially compromising a study's ability to generalize to an intended population. An alternative approach is to…
Descriptors: Randomized Controlled Trials, Recruitment, Educational Research, Generalization
Tipton, Elizabeth; Matlen, Bryan J. – Grantee Submission, 2019
Randomized control trials (RCTs) have long been considered the "gold standard" for evaluating the impacts of interventions. However, in most education RCTs, the sample of schools included is recruited based on convenience, potentially compromising a study's ability to generalize to an intended population. An alternative approach is to…
Descriptors: Randomized Controlled Trials, Recruitment, Educational Research, Generalization
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Roth, Kathleen J.; Bintz, Jody; Wickler, Nicole I. Z.; Hvidsten, Connie; Taylor, Joseph; Beardsley, Paul M.; Caine, Arlo; Wilson, Christopher D. – International Journal of STEM Education, 2017
Background: Most studies of teacher professional development (PD) do not rigorously test impact on teaching practice and student learning. This makes it difficult to define what is truly "effective." The "Science Teachers Learning from Lesson Analysis" (STeLLA) PD program, in contrast, was studied in a cluster randomized…
Descriptors: Faculty Development, Video Technology, Teaching Methods, Science Teachers