Head Start is a national program that helps young children from families with low income get ready to succeed in school. The Head Start Family and Child Experiences Survey (FACES) is the premier source of national information about Head Start programs and participants. For more than two decades, FACES has been advancing the knowledge base about what matters in providing quality early care and education (ECE). Mathematica and its partners--Educational Testing Service and Juárez and Associates--conducted the study under contract to the Office of Planning, Research, and Evaluation, Administration for Children and Families, U.S. Department of Health and Human Services. Data from the study respond to current policy questions and support programs and practitioners working with Head Start families. This report includes key information on the FACES 2019 study design. The tables in this report describe the children enrolled in Head Start programs in fall 2019 and their family backgrounds and home environments. The purpose of this report is to (1) provide information about the FACES study, including the background, design, methodology, assessments, and analytic methods; and (2) report detailed descriptive statistics (averages, response ranges, and percentages) and related standard errors (the estimate of the standard deviation of each statistic) in a series of tables on children and their families.