I wouldn't be quite so hard on yourself. Your initial intention sounds very pure to me.

When you found out about his background - you DID call them. I am sure they will look into it immediately, if they are a responsible group of people.

What you see as screwing up may take a whole other turn. Probably this kid has never been in a situation like this. It might be difficult for him to toe the line at first - but obviously they must have counselors that are professionally able to deal with his case.

Let us all just pray that this young man may have gotten the first good direction in his life -

AND IT WILL BE YOUR FAULT!