This CD contains an electronic codebook (ECB), a restricted-use data file, and survey and ECB documentation for the fall and spring kindergarten, fall and spring first-grade, and fall spring second-grade, and spring third-grade rounds of data collection for the Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011). The CD includes the user's manual developed for use with this data file, which focuses on the third-grade round of data collection, as well as the manual released with the Kindergarten Restricted-Use Data File and Electronic Codebook, the manual released with the Kindergarten-First Grade Restricted-Use Data File and Electronic Codebook, and the manual released with the Kindergarten-Second Grade Restricted-Use Data File and Electronic Codebook.