Despite high levels of need, racial and ethnic minoritized (REM) youth are much less likely than their White peers to engage in mental health treatment. Concerns about treatment relevance and acceptability and poor therapeutic alliance have been shown to impact treatment engagement, particularly retention, among REM youth and families. Measurement-based care (MBC) is a client-centered practice of collecting and using client-reported progress data throughout treatment to inform shared decision-making. MBC has been associated with increased client involvement in treatment, improved client-provider communication, and increased satisfaction with treatment services. Despite its promise as a treatment engagement strategy, MBC has not been studied in this capacity with REM youth or systematically modified to address the needs of culturally-diverse populations. In this article, we propose a culturally-modified version of MBC, Strategic Treatment Assessment with Youth (STAY), to improve treatment engagement among REM youth and families. Specifically, STAY is designed to target perceptual barriers to treatment to improve treatment retention and ultimately, client outcomes. The four STAY components (i.e., Introduce, Collect, Share, and Act) are based on an existing MBC practice framework and modified to address perceptual barriers to treatment among REM youth. The clinical application of this model is presented via a case example. Finally, future research directions to explore the use of MBC as a treatment retention strategy with REM client populations are provided. (PsycInfo Database Record (c) 2022 APA, all rights reserved).