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Download full textSomers, Marie-Andrée; Zhu, Pei; Jacob, Robin; Bloom, Howard – MDRC, 2013
In this paper, we examine the validity and precision of two nonexperimental study designs (NXDs) that can be used in educational evaluation: the comparative interrupted time series (CITS) design and the difference-in-difference (DD) design. In a CITS design, program impacts are evaluated by looking at whether the treatment group deviates from its…
Descriptors: Research Design, Educational Assessment, Time, Intervals
Peer reviewedMulligan, Gail M.; McCarroll, Jill Carlivati; Flanagan, Kristin Denton; Potter, Daniel – National Center for Education Statistics, 2016
The Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011), is collecting information about the early educational experiences of a nationally representative sample of children who were in kindergarten or who were of kindergarten age in ungraded classrooms or schools in the 2010-11 school year. The data collection began in…
Descriptors: Grade 3, Early Childhood Education, Longitudinal Studies, Kindergarten
Mills, Jonathan N.; Wolf, Patrick J. – School Choice Demonstration Project, 2016
The Louisiana Scholarship Program (LSP) is a statewide initiative offering publicly-funded vouchers to enroll in local private schools to students in low-performing schools with family income no greater than 250 percent of the poverty line. Initially established in 2008 as a pilot program in New Orleans, the LSP was expanded statewide in 2012.…
Descriptors: Academic Achievement, Educational Vouchers, Randomized Controlled Trials, Scholarships
