How Everything We Know About Early Childhood Has Changed Since Head Start Was Founded

Fifty years of research — and "Sesame Street" — have changed our understanding of how to best help disadvantaged kids.

Actress Jennifer Garner plays with children before a briefing on expanding early childhood education from birth to age 5 at the US Capitol on November 13, 2013. Research over the past 50 years has changed both theories and policies on what kind of early interventions for disadvantaged children are most effective.
National Journal
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