Findings from the First-Grade Rounds of the Early Childhood Longitudinal Study, Kindergarten Class of 2010-11: First Look
http://nces.ed.gov/pubs2015/2015019.pdf
Provides a snapshot of children who were in kindergarten in the 2010-11 school year and advanced to first grade in the following year. Includes information on child and family characteristics and student achievement in reading, math, and science in the first grade. From the National Center for Education Statistics