Therefore, the prison would be incentivized to work with the prisoners to encourage good behavior and to show the parole board that a prisoner is worth paroling.

So long as private prisons have a say in when a prisoner is released there is conflict of interest. If a private prison gets paid $100k for a prisoner, they are going to ensure they are released at the very soonest opportunity instead of detaining them as long as possible. If they get paid per diem, they will keep them as long as possible.

I agree. This would work best if the prison had no influence on the parole board's decision. That way, the only way to get people out of prison faster is to actually rehabilitate them and encourage good behavior.

> They're just incentivized to release them ASAP

And the only way to do that is to show the parole board that a person is worth paroling, e.g. by rehabilitating them.

Why do you want incentivise a private company to release someone who is so dangerous they have to be removed from society as fast as possible?