This paper reports on the Mexican arm of Family for Every Child’s three-country study on strategies to ensure the sustainable reintegration of children without parental care. It set out to address the question: “What are successful elements in strategies to ensure the sustainable reintegration of children without parental care?”, as identified from a 15-month study on work on family reintegration with boys who have lived on the streets (or been at identifiably high risk of doing so), and their families, in Puebla, Mexico.