Besides the incarceration of offenders, what other purpose do prisons serve?

Question

Quizplus · Accepted Answer

Prisons provide employment opportunities to thousands of workers, including correctional officers, administrative staff, healthcare professionals, and maintenance workers. Additionally, some prisons offer educational and vocational programs for inmates to help them acquire skills and increase their chances of successful re-entry into society. However, there is little evidence to support the argument that prisons effectively reduce overall crime rates through deterrence, and profits from prisons are generally not used to support local schools. Free college educations for inmates are also relatively rare and not a common purpose of prisons.

Besides the Incarceration of Offenders, What Other Purpose Do Prisons