Many adolescents entering substance abuse treatment do not stay for the full course of prescribed treatment. There have been few explorations into what facilitates the ongoing participation of adolescents while in treatment. This paper describes adolescent, parent, and treatment staff perceptions of the barriers and facilitators to retention and participation. Interviews were conducted with 87 adolescents, parents, and staff from three residential substance abuse treatment agencies in two states. Data were coded thematically and organized into themes by respondent type. Respondents reported barriers related to treatment population, program design, and communication and relationships, and reported facilitators related only to communication and relationships. Staff reported far more barriers than facilitators in comparison to either adolescents or parents. Findings suggest that parents and staff underestimate their contributions to the treatment process and practitioners might benefit from rethinking how to communicate the value of these stakeholders.