Eighth grade [electronic resource] : first findings from the final round of the Early Childhood Longitudinal Study, Kindergarten Class of 1998-99 (ECLS-K) / Jill Walston, Amy Rathbun, Elvira Germino Hausken.
Imprint
Washington, DC : National Center for Education Statistics, Institute of Education Sciences, U.S. Department of Education, [2008].