This paper describes issues, experiences, and strategies used in developing successful multisectoral partnerships to advance girls' education, using Guinea and Morocco as examples. Chapter 1 introduces the issue, discussing barriers to girls' education and describing the multisectoral response to interrelated barriers. Chapter 2 defines the multisectoral approach and describes the conceptual approach being implemented in Guatemala, Peru, Morocco, Guinea, and Mali. Chapters 3 and 4 present case studies highlighting how the multisectoral approach to supporting girls' education is being applied in Guinea and Morocco. These cases illustrate the circumstances and conditions affecting girls' education, interventions identified, partners identified across sectors, strategic relationships developed, and the girls' education support programs that have been implemented. Chapter 5 draws conclusions from the case studies about the principles underlying the multisectoral approach and implications for its applicability in other settings. It concludes that the approach, as tested in Guinea and Morocco, offers a robust option for improving girls' education and could serve as a model for the provision of other social services to marginalized populations, where traditional sectors have reached the limits of their ability to serve social demand. (Contains 26 references.) (SM)