This report presents the findings of a rapid assessment of ‘Health Literacy and Behavior Change Practiced among Adolescent Girls in Kibera’ Informal Settlement in Nairobi, Kenya. The study assessed the learning environment, community context and accessibility to formal and non-formal schools for the young girls aged 10-19 years in Kibera to inform the development of tailored interventions for health and behavior change among young population. The particular objectives of the study were: to describe the contextual indicators promoting and inhibiting learning for adolescent girls in both formal and non-formal schools, to investigate promising strategies in health education for girls, and to identify actors involved in health education programmes in schools in Kibera.