This bulletin examines the Office of Juvenile Justice and Delinquency Prevention's Juvenile Accountability Incentive Block Grants (JAIBG) program, which asserts that juvenile offenders should be held accountable for their crimes as a matter of basic justice and to prevent and deter delinquency. It reviews the developmental perspective shaping juvenile accountability and offers case histories illustrating effective practices that promote accountability. The bulletin highlights other JAIBG Best Practices Series bulletins, including: "Construction, Operations, and Staff Training for Juvenile Confinement Facilities" (David Roush and Michael McMillen); Developing and Administering Accountability-Based Sanctions for Juveniles" (Patrick Griffin); "Workload Measurement for Juvenile Justice System Personnel: Practices and Needs" (Hunter Hurst); "Enhancing Prosecutors' Ability to Combat and Prevent Juvenile Crime in Their Jurisdictions" (Heike Gramchow and Elena Tompkins); "Enabling Prosecutors to Address Drug, Gang, and Youth Violence" (Heike Gramchow and Elena Tompkins); "Focus on Accountability: Best Practices for Juvenile Court and Probation" (Megan Kurlychek, Patricia Torbet, and Melanie Bozynski); "Juvenile Gun Courts: Promoting Accountability and Providing Treatment" (David Sheppard and Patricia Kelly); "Juvenile Drug Court Programs" (Caroline S. Cooper); "Establishing and Maintaining Interagency Information Sharing" (Julie Slayton); "Increasing School Safety through Juvenile Accountability Programs" (Scott H. Decker); "Developing a Policy for Controlled Substance Testing of Juveniles" (Ann H. Crowe and Linda Sydney); and "Ten Steps for Implementing a Program of Controlled Substance Testing of Juveniles" (Ann H. Crowe and Linda Sydney). Findings indicate that among the key policies that effective programs have in common are combining restorative restitution and community service with victim input, teaching juvenile offenders how to make positive choices and resolve disputes without aggression, and using flexible, graduated sanctions. (Contains 30 references.) (SM)