There are unique challenges to estimating causal effects of preschool for students with special needs that have not received attention in the literature. We revisit the Head Start Impact Study (HSIS) to illustrate that when and how special needs is defined has implications for the internal validity of and interpretation of special needs subgroup…

The purpose of this demonstration was to evaluate a universal intervention during teacher-identified routines that were characterized by significant classwide problem behavior. Six Head Start classrooms (seven groups of children, with one classroom divided into two groups) received two workshops and two coaching sessions on universal Positive…

This legislators' guide outlines state maternal health programs and strategies and offers states options for improving their maternal and child health services. The introductory chapter 1 is followed by an overview of maternal and child health status in the United States in chapter 2. Costs associated with the failure to provide adequate prenatal…