Participation in the School Breakfast Program is much less common than participation in the National School Lunch Program, even among children with access to both programs. Studies have found that students are more likely to participate when breakfast is served in the classroom, when time available for breakfast in school is longer, and when they come from lower income or time-constrained households. This new book examines the determinants of participation in the School Breakfast Program, as well as the impacts of the program on food insecurity and children's risk of skipping breakfast.