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. 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. 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. 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. 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. Parents, educators, and policymakers can use information collected through the ECLS program to improve students' educational experiences. 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. The ECLS program is conducted by the U.S. The newest ECLS program study, the ECLS-K:2024, will follow the kindergarten class of 2023-24 through the fifth grade. The kindergarten class of 2010-11 cohort is a sample of children followed from kindergarten through the fifth grade. The kindergarten class of 1998-99 cohort is a sample of children followed from kindergarten through the eighth grade. The birth cohort of the ECLS-B is a sample of children born in 2001 followed from birth through kindergarten entry. The ECLS program includes four longitudinal studies that examine child development, school readiness, and early school experiences. For more than 20 years, the ECLS program has helped educators, families, researchers, and policymakers improve children's educational experiences. The data files include information on 4,606 children and 2,610 caregivers.
The CDS-2019 questionnaires are available in the Documentation section of the PSID website. The Early Childhood Longitudinal Study (ECLS) program provides important information about children's knowledge, skills, and development from birth through elementary school. Immigrant sample, added to the PSID in 19, were assigned 1968 IDs so that they, too, have unique identifiers compatible with the PSID structure for the Core (SRC and Census) sample.