Dorton,
When my son first went to rehab, he was kicked out the second week for smoking weed....no he didn't get it at all. I think a good program is anywhere from 6-12 that is just from what I have heard. Don't let him suck you in, you are already on to him and what he is trying to do.....get out. How old is your son and is he there by court order or your order? Just wondering.