The Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011) is a longitudinal study that followed a nationally representative sample of students from their kindergarten year to the spring of 2016, when most of the students were in fifth grade. This public-use data file includes data from every round of data collection: the fall and spring of the 2010-11 school year, when all of the students were in kindergarten; the fall and spring of the 2011-12 school year, when most of the students were in first grade; the fall and spring of the 2012-13 school year, when most of the students were in second grade; the spring of 2014, when most of the students were in third grade; the spring of 2015, when most of the students were in fourth grade, and the spring of 2016, when most of the students were in fifth grade. The file includes information collected from the students, their parents/guardians, their teachers, and their school administrators in each year of the study. It also includes information collected in the spring of 2011 from their kindergarten-year before- and after-school care providers.
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