Shock probation is the policy by which a judge orders a convicted offender to prison for a short time then suspends the remainder of the sentence in favor of probation. It is hoped that the initial experience of prison will provide an effective deterrent from recidivism.
In shock probation, someone is sentenced to prison and starts serving the sentence. After three to six months, the judge resentences the prisoner to probation, and the prisoner is released under supervision. Shock probation is usually considered when a prisoner is a first time offender and a judge believes, given the circumstances of the case, that the prisoner has a chance at reform which may be enhanced by being released.
Shock probation is not commonly used in all states. In states where it is used, shock probation may be at the discretion of the judge.