Assessment and identification of children with emotional and behavioral disorders (EBD) is complex and involves multiple techniques, levels, and participants. While federal law sets the general parameters for identification in school settings, these criteria are vague and may lead to inconsistencies in selection and interpretation of assessment measures. Assessment practice across school settings is greatly influenced by clinical guidelines such as the DSM-IV, which more specifically defines emotional and behavioral disorders and highlights the issue of co-morbidity. Before a student is assessed for special education eligibility under the IDEIA category of emotional disturbance, screening techniques and pre-referral interventions are needed. Positive Behavioral Supports and Response to Intervention models provide empirically supported frameworks for establishing the need for formal psychological assessment. Collaboration among members of the multidisciplinary team, including parents, helps to ensure that identification and intervention efforts have ecological validity. Tests and techniques vary considerably, but developmental histories, interviews, observations across settings, and behavioral checklists and rating scales are recommended, along with cognitive and achievement testing. While problems exist in the reliability and validity of projective techniques, they continue to be used in school-based assessment for EBD. Multitrait, multisetting, and multimethod approaches are essential for culturally fair assessment and reduction of bias in identification and placement. [For complete volume, see ED540057.]