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Welcome to the ECLS-K:2011!

The ECLS-K:2011 is the third in a series of early childhood longitudinal studies sponsored by the National Center for Education Statistics. Like its predecessors, the Early Childhood Longitudinal Study, Kindergarten Class of 1998-99 (ECLS-K) and the Early Childhood Longitudinal Study, Birth Cohort of 2001 (ECLS-B), the ECLS-K:2011 will provide comprehensive and reliable data about

  • children's early learning and development,
  • their transition into kindergarten, and
  • their progress through school.

The data collected over the years will allow researchers, policymakers, and educators to study how student, home, classroom, school, and community factors in children’s lives relate to cognitive, social, and emotional development and physical health at various points.

The Questions We Will Answer Together

Thanks to you and your school, the ECLS-K:2011 will allow researchers and policy makers to answer such questions as:

  • What do children know and what skills do they possess when they start school?
  • How well do children do in their first encounter with formal schooling?
  • How healthy are kindergartners? What percentage are considered overweight or underweight? How many have difficulty hearing?
  • How do kindergartners behave? Do they pay attention to teachers, cooperate with other children, and display an eagerness to learn?
  • How do children’s knowledge, skills, and behavior change over time? How do their school experiences change over time?
  • How well do children’s kindergarten programs prepare them for the opportunities and challenges in later grades?