The Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011), is part of the Early Childhood Longitudinal Study (ECLS) program; program data is available since 1998-99 at . ECLS-K:2011 is a longitudinal study that focuses on children's early school experiences beginning with kindergarten and continuing through the fifth grade. It includes the collection of data from parents, teachers, school administrators, and before- and after-school care providers, as well as direct child assessments of students. ECLS-K:2011 is exceptionally broad in its scope and coverage of child development, early learning, and school progress, drawing together information from multiple sources to provide rich data about the population of children who were kindergartners in the 2010-11 school year. The survey was conducted using computer-assisted interviews and paper questionnaires. The primary respondents in this study are students and their parents, general classroom teachers, special education teachers, school administrators, and before- and after-school care providers.