Monitoring and evaluation (M&E) should enhance the conceptual and practical knowledge of reintegration organizations in ways that improve programs and service delivery. This paper discusses, on the one hand, how monitoring should take place within reintegration programs, including the identification of indicators and development of systems to collect, analyze and mobilize information in on-going work. On the other hand, the paper explores various aspects of evaluation work, including different types of evaluations and different approaches in undertaking evaluations of reintegration programs. Overall the paper makes clear that more attention needs to be given to M&E in reintegration efforts and makes recommendations for strengthening the monitoring and evaluation of anti-trafficking reintegration programs.