This training will review the history of assertive community treatment (ACT) as well as discuss the origin of the ACT approach, describe key findings from studies that have examined its effectiveness, and explore its impact in different contexts. The training will provide an overview of fidelity scales used to assess whether ACT programs are operating as intended. It will focus on the relevance of ACT adaptations, like Full Service Partnerships, in serving clients who can benefit from interventions like ACT that are assertive, intensive, and multidisciplinary.