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Direct linkMark W. Lipsey; Christina Weiland; Hirokazu Yoshikawa; Sandra Jo Wilson; Kerry G. Hofer – Educational Evaluation and Policy Analysis, 2015
Much of the currently available evidence on the causal effects of public prekindergarten programs on school readiness outcomes comes from studies that use a regression-discontinuity design (RDD) with the age cutoff to enter a program in a given year as the basis for assignment to treatment and control conditions. Because the RDD has high internal…
Descriptors: Preschool Education, Preschool Children, School Readiness, School Entrance Age
Achilles, C. M.; And Others – 1996
A project conducted in Tennessee from 1984 through 1989, Student Teacher Achievement Ratio (Project STAR), serves as a context for a discussion of educational research. The decisions required in major research projects and the problems in carrying out research are seldom discussed in conferences that present research results as completed efforts.…
Descriptors: Academic Achievement, Class Size, Databases, Decision Making
