The Nevada Department of Corrections is all about improving upon their security. The reason why they are so strict on their security is they want their inmates to have a safe place to stay, but also providing these same inmates treatment programs, classes, and courses to help them along their personal development path as well.
By the Department of Corrections in Nevada offering their inmates these things, they are promoting a safer place for these inmates to be as they are learning to negate their bad behaviors. This is a great tool that they use to reduce the number of re-offenders within their facilities as well.
Please keep in mind that while the Department of Corrections in Nevada is all about their inmates behind bars, that is not the only people they oversee either. The Department of Corrections is also in charge of those who were paroled out of jail and those who were strictly on probation as well. These same programs will be available to these offenders as well to keep down the re-offender rate.