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Your query returned 2 studies. Series results are grouped under the most relevant study. Ungroup series results to view all results.

Early Childhood Longitudinal Study [United States]: Kindergarten Class of 1998-1999 (ICPSR 3676)
United States Department of Education. National Center for Education Statistics

more results 1 more result in Early Childhood Longitudinal Study (ECLS) Series

Study of Instructional Improvement (SII) (ICPSR 26282)
Loewenberg Ball, Deborah; Cohen, David K.; Rowan, Brian

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