This document outlines key topics related to juvenile delinquency and the juvenile justice system. It discusses early institutions established to address juvenile offenders, including the Hospital of St. Michael in 1704. It also examines the different approaches to classifying and understanding the causes of delinquency, such as biogenic, psychogenic, and sociogenic views. Furthermore, it describes the types of delinquent youth and classifications of delinquency, as well as the houses of correction and reform schools that were established for juvenile delinquents in the 18th-19th centuries.