The Clinic Treatment Project focused on ethnically diverse youths aged 7-13 who were referred to community-based mental health clinics for problems involving disruptive behaviors, depression, anxiety, and any combination of these. Using a randomized block design, therapists were randomly assigned to deliver usual treatment procedures (usual care, or UC) in their clinics or evidence-based practices deployed in two forms: (a) standard manual treatment (SMT), using full treatment manuals, one at a time, exactly as they have been tested in clinical trials, and (b) modular manual treatment (MMT) in which therapists learn the component practices of the standard manuals but individualize the use of the components for each child using a guiding clinical algorithm. Unlike the SMT approach, the MMT approach allows the duration and sequencing of techniques to be individualized in an effort to fit the child's needs and allows the clinician to draw techniques from outside the target disorder domain when needed (e.g., to address noncompliance during the course of treating depression). Both SMT and MMT were supported by training and supervision procedures designed to fit providers and their clinic contexts. Assessments were carried out at pre-treatment, at post-treatment, and at 3-, 6-, 9-, 12-, 18-, and 24-month follow-ups. Assessments carried out at pre-treatment included(a) individual youth problems and disorders; (b) individual youth functioning at home and school; and (c) clinic staff beliefs and attitudes toward their work and workplace. Assessments carried out at post-treatment and follow-up only included measures of (a) youth, parent, and therapist satisfaction with treatment; (b) youth, parent and therapist views on the quality of the therapeutic relationship; and (c) treatment costs. Assessments carried out at follow-up only included (a) parent reports of any mental health service use following project treatment, and (b) therapist reports on the extent to which the treatment procedures they used in the project are continued after project termination. Analyses will address critical questions about deployment of evidence-based youth practices to clinical care settings.