There is overwhelming evidence that traumatic experiences in childhood--such as physical or sexual assault, gang violence, domestic violence, or sudden loss of a loved one--can lead to poor outcomes in adulthood. Research has identified evidence-based practices that improve outcomes for these children and families, and there has been a push at the federal level in recent years to increase the use of such practices in children's mental health care. However, many of the current services available lack evidence of their effectiveness. In this context, the Los Angeles-based Children's Institute, Inc. (CII), operates its wide range of programs and services, including clinical mental health services, early child care and Head Start programs, programs for parents and guardians, and youth development activities. Integrating and coordinating these services to address the holistic needs of children and families is a critical component of CII's service model, as is the use of evidence-based practices in mental health treatment when appropriate. The CII evaluation had two main components: an implementation study of CII's service model and a study of CII's delivery of evidence-based practices, including an in-depth fidelity study of its Trauma-Focused Cognitive Behavioral Therapy (TF-CBT) services. Key findings included: (1) CII is achieving its goal of engaging clients in multiple services to holistically meet their needs; (2) Analysis of management information system data indicates that nearly a third of the children engaged in clinical services received an evidence-based practice; (3) Analysis also indicates that the dosage levels of Functional Family Therapy and TF-CBT--two prominent evidence-based practices at CII--were both in line with model expectations; and (4) The in-depth fidelity study of TF-CBT indicated that CII's implementation of the treatment model was aligned with that of other community-based organizations in similar fidelity studies. Data Analysis Limitations are appended.