@dyslexia,
there is a wide variety in the state programs, but they generally make some effort to treat committed sex offenders differently from prisoners. Every inch they take away from treating them as convicts should be applauded. However, the SCOTUS as just OK'ed keeping them in the prison system, which is much cheaper, and is totally wrong.
It costs on average $150.000 a year to keep a confined sex offender in the mental health system, which is 3 to 5 times what a prisoner costs to house, at least that discourages the practice.