Measurement-based care (MBC) research and practice, including clinical workflows and systems to support MBC, are grounded in adult-serving mental health systems. MBC research evidence is building in child and adolescent services, but MBC practice is inherently more complex due to identified client age, the family system and the need to involve multiple reporters. This paper seeks to address a gap in the literature by providing practical guidance for youth-serving clinicians implementing MBC with children and their families. We focus on MBC as a data-informed, client-centered communication process, and present three key strategies to enhance usual care child and adolescent psychotherapy via developmentally-appropriate MBC. These strategies include (1) go beyond standardized measures; (2) lean into discrepancies; and (3) get curious together. Case-based examples drawn from various child-serving settings illustrate these key strategies of MBC in child psychotherapy.