HOPE entails the use of swift, certain, and modest sanctions in community supervision, to improve compliance and reduce recidivism. Two studies of its initial implementation in Hawaii indicate that it reduced probationer drug use and recidivism, with lower total costs of incarceration than conventional probation. Similar programs have been started in jurisdictions in at least twenty states, and the US Department of Justice has funded a Demonstration Field Experiment (DFE) in four states. This panel presents preliminary findings on offender outcomes and on adapting implementation to diverse jurisdictions, from the DFE; on offender outcomes and program implementation from a long-term followup study in Hawaii; and from the statewide implementation in Washington State.