| Summary: | Few researchers have addressed student achievement outcomes as a function of grade configurations for older elementary-aged students. Thus, this study was designed to determine differences between studentsâ Grade 5 reading and mathematics achievement in elementary schools (Kâ5) as compared to intermediate schools (Grade 5, 5â6) for 5 academic years. Using archival statewide data, researchers used a rigorous five-step distance-based formula to match elementary schools to intermediate schools on four demographic/school characteristic variables. Students in K-5 settings attained statistically significantly higher levels of reading and mathematics achievement than did their counterparts, with moderate mean effect sizes of 0.37 and 0.47.
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