Using Participatory Design and Community Partnered Participatory Research (CPPR), UCLA and UCR psychiatry research centers with Los Angeles Trust for Children's Health aim to: (1) Fully co-design (with youth, caregivers, clinicians and other stakeholders) an innovative mental health digital tool, called Connected for Wellness, to implement algorithmically supported mental health + social determinants, resiliency app based tools and navigation activities AND help support the clinical workforce within schools and primary care clinics (PCCs); (2) Study the implementation of mental health navigation models (family and youth navigation) plus the Connected for Wellness app, and their effectiveness for improving connecting and matching youth to the right level of care and supports. We will accomplish these aims through three strategies: (1) Use community participatory informatics to co-design a mental health digital tool called Connected for Wellness, to support mental health navigation, linking youth to a range of mental health services, evidence-based prevention resources referred via the app, and other school, clinic, community, and social supports; (2) Integrate mental health self-assessments and artificial intelligence (AI) in Connected for Wellness to individualize app resources, optimize engagement and recommendations for addressing mental health and social needs; (3) Using a stepped wedge design, test the implementation of the app supported by mental health navigation models (peer navigators, family navigators) for improving connections and access to prevention resources, mental health services and social supports, for youth and families. This project will be initiated with youth 13-22 years old and their family and community members across 10 Los Angeles County Schools and 10 Riverside County/University of California Riverside primary care clinics. A successful outcome of the project is a CPPR developed app-based intervention implementable in school-based and primary care services for access to wellness resources and improving mental health services access along the cascade of care. Outcomes are measured using the cascade of care model with the following key stages: (1) need identification, (2) referral to care/ linkage to resources, and (3) care initiation.