A review of major historical trends in the development of correctional classification is provided, and the distinction between objective and subjective approaches to classification is delineated. The integration of various trends within classification is considered, with focus on the assessment planning intervention model. Measurement criteria for determining the adequacy of correctional assessment, planning, and intervention and their linkages also are illustrated. Following a review of the juvenile corrections special education literature, the special needs of learning disabled juvenile offenders are discussed within the context of the psychoeducational assessment process used at the private, nonprofit George Junior Republic in Pennsylvania. Efforts of jurisdictions that have adopted objective classification systems are reviewed, and a 12-step, common sense approach to the development, implementation, and revision of objective classification systems is outlined. A case/unit management approach to classification and service delivery is examined within the context of a study of correctional institution social climate. Key issues in both detention classification and direct supervision in a large, Texas detention center are addressed. Finally, the Massachusetts Classification and Program Agreement System is described and evaluated. Chapter figures and references. See NCJ-115182 through NCJ-115188 for individual chapters.