Many inmates will not qualify for programs based on their poor behavior. I am quit familiar with the DOC in your state and I suspect your son's behavior or lack of interest was what stopped him from getting services.
Also, no one made you put money on his books. It's not a requirement. Or is taking collect calls or visiting. You chose to do this. You chose to allow him to be paroled to your home.
I suspect that it was always his friends or teachers, etc fault....never your sons. Perhaps if you stopped enabling him, took responsibility and accountability for your choices and allowed your son to do the same, there could be a healthier ending at least for one of you.
P.S. I am Christian and attend church faithfully. Fortunately, I have a pastor who guided me in a positive direction to learn to stop many of my own unhealthy choices, One of which was enabling.