This study examines the water, sanitation and hygiene situation in 42 schools in Haiti after the earthquake of January 12, 2010, by using a comprehensive approach, which includes participatory assessment tools and formal surveys. By conducting a detailed assessment of school water and sanitation infrastructure conditions and of the perceptions of students and professors, a series of recommendations are provided to support further project implementation towards more sustainable results. Direct observations showed that schools lack safe drinking water, appropriate sanitation and hand washing facilities. The main constraints to improve the water, sanitation and hygiene services were found to be related to lack of funding and infrastructure losses after the earthquake. Moreover, hygiene education is commonly not part of the school curriculum. Providing schools with adequate access to water and sanitation facilities and supporting the implementation of hygiene promotion programs, including a disaster risk preparedness plan, can play significant roles for a sustainable recovery phase.