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Elizabeth Kurban; Yinmei Wan; Mariesa Hawkins; Dana Shaat – American Institutes for Research, 2024
Purpose: The purpose of the study was to evaluate the implementation and impact of the IDEA Public Schools' Mathematics Curriculum Redesign (MCR) effort, funded by an Innovation and Research (EIR) grant. Methods: The study used a quasi-experimental matching design to examine the effect of MCR on student achievement outcomes. The study compared…
Descriptors: Public Schools, Mathematics Curriculum, Grants, Educational Change
Beaton, Albert E.; Chromy, James R. – American Institutes for Research, 2007
Fundamental to statistical analyses is the comparison of means of one variable from two or more populations. Population samples may be constructed (i.e., experimental and control groups), or they may be natural groupings (i.e., students at a particular grade in different years). If the populations are similar, the mean comparisons are…
Descriptors: Control Groups, Academic Achievement, Statistical Analysis, Comparative Analysis