It greatly depends upon the state. In mine, the certification for fostering is less in-depth than adoption but we did ours all at once, so it ended up being the same for us - lol. Of course, with fostering you have to maintain training and things and go thru periodic re-checks.
I believe the idea behind the less in-depth studies to foster than to adopt is that in fostering, workers are in the home constantly. With adoption, after the adoption is final, the child is unseen by officials again.
NOW - let me say this - our adoptions have been thru the foster system - not private - so it's possibly different if you're doing private adoption.
Best of luck to you :)
at 6:24 PM on Oct. 28, 2009