RT Journal Article SR Electronic T1 Report Analysis: The Impact of Head Start JF Harvard Educational Review JO herp FD Harvard Educational Press SP 51 OP 104 DO 10.17763/haer.40.1.f3h6164m816t2552 VO 40 IS 1 A1 Smith, Marshall A1 Bissell, Joan YR 1970 UL http://harvardeducationalreview.org/content/40/1/51.abstract AB The Westinghouse-Ohio national evaluation of Head Start evoked criticism from both social scientists and statisticians when it was issued last Spring. The authors present a history of Head Start and of the national evaluation. They raise serious questions about the sampling procedures used in the study, and they present the results of a re-analysis which suggest that some full-year Head Start centers were effective, particularly those with black children in urban areas. Policy implications discussed by the authors focus on the relationship between program evaluation and public policy.