Gaps in addition and subtraction temporarily widen but narrow by late elementary school

Percent proficient in addition and subtraction from fall kindergarten to spring first grade to spring fifth grade, by household socioeconomic status

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Data collected from SY 98-99 through SY 03-04. Weighted by the ECLS-K cross-section full-sample parent weights: C1PWO, C4PWO, and C6PWO.

Chart: Munro RichardsonSource: Early Childhood Longitudinal Study, Kindergarten Class of 1998-99 (ECLS-K)Get the dataCreated with Datawrapper