A more thorough explanation:

A correctional system is a group of government agencies that manage a region's prisons and parole system.

For example, in the United States, the Federal Bureau of Prisons and state departments of corrections are part of the correctional system. These agencies are responsible for incarcerating individuals who have been convicted of crimes and supervising those who have been released on parole.

The correctional system aims to protect society by punishing offenders and rehabilitating them so that they can become productive members of society. It also provides support to victims of crime and their families.

Overall, the correctional system plays a crucial role in maintaining law and order in a society.