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Early Childhood Longitudinal Study [United States]: Kindergarten Class of 1998-1999, Third Grade

Resource Type
Dataset : survey data
  • United States Department of Education. National Center for Education Statistics
Other Title
  • Archival Version (Subtitle)
Collective Title
  • Early Childhood Longitudinal Study (ECLS) Series
Publication Date
Publication Place
Ann Arbor, Michigan
  • Inter-University Consortium for Political and Social Research
Free Keywords
Schema: ICPSR
birth; child care; child development; early childhood education; elementary education; family life; infants; mathematics; minorities; preschool children; reading skills; school age children; school readiness; schools
  • Abstract

    The Early Childhood Longitudinal Study, Kindergarten Class of 1998-1999 (ECLS-K) focuses on children's early school experiences beginning with kindergarten through fifth grade. It is a nationally representative sample that collects information from children, their families, their teachers, and their schools. ECLS-K provides data about the effects of a wide range of family, school, community, and individual variables on children's development, early learning, and early performance in school. This data collection contains the wave of data collected in the spring of third grade (2002). The third-grade data collection includes information about the diversity of the study children, the schools they attended, and their academic progress in the years following kindergarten. Other variables include child gender, child race, family background, childcare, childcare arrangements, food security, hours per week in child care, socioeconomic status, household income, highest level of education for parents and students, parents' employment status, teachers' evaluation practice, and usefulness of different activities in the classroom.
  • Methods

    ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection: Checked for undocumented or out-of-range codes..
  • Abstract


    • DS0: Study-Level Files
    • DS1: Third Grade Child Data
    • DS2: Round 5 Base Weights and Adjustment Factors
    • DS3: Cross-Round Weight Status
    • DS4: Third Grade Child Data: C45CW0 - child assessment data for both spring-first grade and spring-third grade (Online Analysis Only)
    • DS5: Third Grade Child Data: C45PW0 - parent interview data for both spring-first grade and spring-third grade (Online Analysis Only)
    • DS6: Third Grade Child Data: C245CW0 - child assessment data for spring-kindergarten and spring-first grade and spring-third grade (Online Analysis Only)
    • DS7: Third Grade Child Data: C245PW0 - parent interview data for spring-kindergarten and spring-first grade and spring-third grade (Online Analysis Only)
    • DS8: Third Grade Child Data: C1_5FC0 - child assessment data for four rounds of data collections (Online Analysis Only)
    • DS9: Third Grade Child Data: C1_5FP0 - parent interview data for four rounds of data collection (Online Analysis Only)
    • DS10: Third Grade Child Data: C1_5SC0 - child assessment data for all five rounds of data collection (Online Analysis Only)
    • DS11: Third Grade Child Data: C1_5SP0 - parent interview data for all five rounds of data collection (Online Analysis Only)
    • DS12: Third Grade Child Data: C5PW0 - parent interview data for third grade (Online Analysis Only)
    • DS13: Third Grade Child Data: C5CPTW0 - child assessment data for third grade combined with third grade parent interview data and third grade teacher data (Online Analysis Only)
Temporal Coverage
  • Time period: 2001--2002
  • 2001 / 2002
  • Collection date: 2002
Geographic Coverage
  • United States
Sampled Universe
Children and their families, teachers, and schools in the United States.
ECLS-K utilized a multistage probability sample design to select a nationally representative sample of children attending kindergarten in 1998-1999. The Third Grade sample consisted of all children who were base year respondents and children who were brought into the sample in spring-first-grade wave through the sample freshening procedure described in section 4.3 of the manual and their families, teachers, and schools. The first-grade data collection targeted base-year respondents, in which a case was considered responding if there was a completed child assessment or parent interview in fall- or spring-kindergarten. While all base-year respondents were eligible for the spring-first-grade data collection, the effort for fall-first-grade was limited to a 30-percent subsample. The spring student sample was freshened to include current first graders who had not been enrolled in kindergarten in 1998-1999 and, therefore, had no chance of being included in the ECLS-K base-year kindergarten sample. For both fall- and spring-first grade, only a subsample of students who had transferred from their kindergarten school was followed. The third-grade data collection targeted base-year respondents and children sampled in first grade through the freshening operation. As in the first-grade data collection, only a subsample of students who had transferred from their kindergarten school was followed. In third grade, however, the subsampling rate applied to transferred children was slightly higher: children whose home language was non-English (also known as children belonging to the language minority group) and who moved for the first time in third grade were followed at 100 percent. In other words, children belonging to the language minority group who did not move in first grade but moved in third grade were all followed into their new third grade schools. The Third Grade User Manual is provided as part of the documentation for this collection.
2013-08-12 Study-level Files section has been created.2013-08-08 2013-08-06 The ECLS-K instrument matrix has been created.
This version of the study is no longer available on the web. If you need to acquire this version of the data, you have to contact ICPSR User Support (
Alternative Identifiers
  • 4075 (Type: ICPSR Study Number)
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    DOI: 10.3886/ICPSR04075.v1
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  • Magnuson, Katherine A., Ruhm, Christopher, Waldfogel, Jane. The persistence of preschool effects: Do subsequent classroom experiences matter. Early Childhood Research Quarterly.22, (1), 18-38.2007.
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Update Metadata: 2019-09-04 | Issue Number: 8 | Registration Date: 2015-06-15

United States Department of Education. National Center for Education Statistics (2005): Early Childhood Longitudinal Study [United States]: Kindergarten Class of 1998-1999, Third Grade. Archival Version. Early Childhood Longitudinal Study (ECLS) Series. Version: v0. ICPSR - Interuniversity Consortium for Political and Social Research. Dataset.