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Youmi Suk; Yongnam Kim – Society for Research on Educational Effectiveness, 2023
Background/Context: Observational studies often employ regression discontinuity (RD) designs and multiple control-group designs to explore the causal quantities of interest. RD designs assess policy and program effectiveness by assigning subjects to treatment based on whether they exceed a pre-defined cutoff. RD designs are classified into two…
Descriptors: Regression (Statistics), Research Design, Control Groups, Program Effectiveness
Youmi Suk; Youjin Lee – Society for Research on Educational Effectiveness, 2024
Background/Context: Some observational studies involve multiple layers of treatment selection, specifically in the context of the extended time accommodation (ETA) for English language learners (ELLs). In ETA settings, the first selection occurs due to the eligibility rule, where students whose ELL English proficiency is below a certain threshold…
Descriptors: Evidence, Regression (Statistics), Research Design, Control Groups
Llosa, Lorena; Lee, Okhee; Jiang, Feng; Haas, Alison; O'Connor, Corey; Van Booven, Christopher D.; Kieffer, Michael J. – American Educational Research Journal, 2016
The authors evaluated the effects of P-SELL, a science curricular and professional development intervention for fifth-grade students with a focus on English language learners (ELLs). Using a randomized controlled trial design with 33 treatment and 33 control schools across three school districts in one state, we found significant and meaningfully…
Descriptors: Intervention, Science Education, Science Course Improvement Projects, Program Effectiveness
Deke, John; Dragoset, Lisa; Moore, Ravaris – National Center for Education Evaluation and Regional Assistance, 2010
In randomized controlled trials (RCTs) where the outcome is a student-level, study-collected test score, a particularly valuable piece of information is a study-collected baseline score from the same or similar test (a pre-test). Pre-test scores can be used to increase the precision of impact estimates, conduct subgroup analysis, and reduce bias…
Descriptors: Achievement Gains, Scores, Pretests Posttests, Regression (Statistics)
Sprague, Kim; Hamilton, Jennifer; Coffey, Deb; Loadman, William; Faddis, Bonnie – Society for Research on Educational Effectiveness, 2009
Rigorous research provides information that will allow other schools and districts to select interventions that have a scientifically based track record of effectiveness. All Striving Reader grants include the mandate to evaluate literacy intervention(s) targeted to adolescents who are reading significantly below grade level. Although all studies…
Descriptors: Conferences (Gatherings), Evaluators, Program Effectiveness, Evaluation Methods