In 1998, Congress authorized the School Breakfast Program Pilot Project (SBPP) to study the implementation and effects of providing universal free school breakfast in six school districts across the United States. For three years, from School Year (SY) 2000-2001 through SY 2002-2003, these six school districts received federal funds to offer school breakfasts free of charge, regardless of family income, to students in a number of elementary schools that were matched on a number of characteristics, then randomly assigned to either treatment or control status. The control schools continued to offer the regular School Breakfast Program (SBP), which provides free or reduced-price breakfasts to eligible students from low-income families. Over the course of the three years of the pilot project, data were collected from all participating schools for an evaluation of the implementation and impact of providing universal-free school breakfast. The current report serves as the final report of findings from the SBPP. It provides impact estimates for a smaller set of outcomes, based on data collected over the remaining two years of the pilot, and integrates the findings from all three years of the SBPP. This report also presents findings from an additional set of analyses undertaken to address a set of questions that have been raised by policy makers and other stakeholders since the release of the first year report. These include analyses focused on students who do not eat breakfast ("breakfast skippers") and those who eat a nutritionally robust or "substantive breakfast"; variations in the breakfast setting (i.e., school versus home, classroom versus other school location); characteristics of students in food insecure households; and differences in student outcomes by household income level. The remaining sections of this chapter provide background information about the SBP; a brief summary of research on the relationship between breakfast and student outcomes; an overview of the SBPP, including a review of the conceptual model for understanding the pilot project; a summary of the findings in the interim report on Year 1 findings, and a description of the purpose and contents of this final report.