Skip Navigation
Digest of Education Statistics: 2007
Digest of Education Statistics: 2007

NCES 2008-022
March 2008

Appendix A.2. Early Childhood Longitudinal Study, Birth Cohort 2001

The Early Childhood Longitudinal Study, Birth Cohort (ECLS-B) is designed to provide decisionmakers, researchers, child care providers, teachers and parents with nationally representative information about children's early learning experiences and the transition to child care and school. Children's physical and cognitive development, care, and learning experiences at home and school are measured using standardized assessments from birth through kindergarten entry.

Data were collected from a sample of about 10,700 children born in the United States in 2001, representing a population of approximately 4 million. The children participating in the study come from diverse socioeconomic and racial/ethnic backgrounds, with oversamples of Chinese, other Asian and Pacific Islander, American Indian/Alaska Native, twin, and moderately low and very low birth weight children. Children, their parents (including nonresident and resident fathers), their child care providers, and their teachers provide information on children's cognitive, social, emotional, and physical development across multiple settings (e.g., home, child care, and school).

At 9 months (2001–02), 2 years (2003–04), 4 years (2005), 5 years (2006), and 6 years (2007), parents are asked about themselves, their families, and their children; fathers are asked about themselves and the role they play in supporting their child's care and development; and children are observed and assessed. In addition, starting when children are about 2 years old, child care and early education providers are asked to provide information about their own experience and training, their relationship with the child, and the setting's learning environment. When the children are in kindergarten (2006 and 2007), teachers are asked to provide information about the children's early academic skills and the classroom environment. School-level data, merged from two other NCES data sets (the Common Core of Data and the Private School Survey), and residential zip codes collected at each wave, support community descriptions.

Further information on the ECLS-B may be obtained from

Jennifer Park
Early Childhood, International, and Crosscutting Studies Division
Early Childhood and Household Studies
National Center for Education Statistics
1990 K Street, NW
Washington, DC 20006