The Early Childhood Longitudinal Study (ECLS) program provides important information about children's knowledge, skills, and development from birth through elementary school. For more than 20 years, the ECLS program has helped educators, families, researchers, and policymakers improve children's educational experiences.
The ECLS program includes four longitudinal studies that examine child development, school readiness, and early school experiences. The birth cohort of the ECLS-B is a sample of children born in 2001 followed from birth through kindergarten entry. The kindergarten class of 1998-99 cohort is a sample of children followed from kindergarten through the eighth grade. The kindergarten class of 2010-11 cohort is a sample of children followed from kindergarten through the fifth grade. The newest ECLS program study, the ECLS-K:2024, will follow the kindergarten class of 2023-24 through the fifth grade.
The ECLS program is conducted by the U.S. Department of Education. The National Center for Education Statistics (NCES), within the Department's Institute of Education Sciences (IES), has a mandate from Congress and is authorized by law to collect statistical data on the condition and progress of education in the United States, including conducting longitudinal data collections like the ECLS program studies. Parents, educators, and policymakers can use information collected through the ECLS program to improve students' educational experiences. The program also provides data to analyze the relationships among a wide range of family, school, community, and individual factors with children's development, early learning, and performance in school.
Restricted-use and public-use files containing data from all rounds of data collection, that is kindergarten through fifth grade, for the Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011) are now available. Please note that while the ECLS-K:2011 was designed to allow for cross-cohort comparisons with the Early Childhood Longitudinal Study, Kindergarten Class of 1998–99 (ECLS-K), the direct child cognitive assessment scores available on these files are not directly comparable to scores from the ECLS-K. Child assessment scores designed specifically for comparisons between the ECLS-K and ECLS-K:2011 cohorts are currently in development, with an anticipated release date to be determined. It is appropriate to use data from the current data file release to compare the two cohorts in other ways, for example to look at differences in demographic characteristics or the home, school, and classroom experiences of the two groups.
Did you receive a letter about the Early Childhood Longitudinal Study (ECLS)?
Do you have questions about participating?
March 6, 2020:Now available!: ECLS-K:2011 online training (Distance Learning Dataset Training (DLDT)
March 21-23, 2019:ECLS-K:2011 training to be held at March 2019's SRCD biennial meeting
April 12, 2018:Data collection for the Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011) has ended.
April 12, 2018:ECLS-K:2011 training held at April 2018's AERA annual meeting
April 5, 2017:ECLS-K:2011 training held at April 2017's SRCD annual meeting
April 8, 2014:NCES releases ECLS-B and ECLS-K online training modules
May 31, 2018:ECLS-K:2011 Restricted-Use Kindergarten-Fourth Grade Data File and Electronic Codebook
March 27, 2018:ECLS-K:2011 Public-Use Kindergarten-Fourth Grade Data File and Electronic Codebook