Parole is the conditional release of a prisoner before the end of their sentence, allowing them to serve the remainder of the sentence outside of prison but under supervision. It aims to help rehabilitate prisoners and ease their transition back into society. To be eligible for parole, a prisoner must have served a portion of their sentence, usually a third to a half, and be deemed low risk. While on parole, the released prisoner remains under the supervision of parole authorities. Parole can be revoked if conditions are violated. The goals of parole are rehabilitation of the offender and protection of society.