I've stayed an watched for a bit, 10-30 minutes at a time, but never longer than that except when I was interviewing the place and I was there for over an hour. (The teacher student interaction was amazing which is why we picked the place). Since Wolf started I never noticed anything out of the ordinary about his interactions, but when I was watching was normally in the middle of a project or playtime and Wolf was already engaged.
Hmmm... You know, he's been going there for a year and until about 2 months ago he was in the afternoon group which is a MUCH smaller group of kids and all his age or older, a max of 5 students including him. We transitioned him to an earlier session so he could have some more time with groups of kids. Now the age range is bigger, there are more teachers and at least a dozen kids, not counting him. I wonder if he's just overwhelmed by it all? I know there is a much different feel during the day than there is during the afternoon. Bear is my socially sensitive one and it never occurred to me that the change might be hard for Wolf. I'll have to talk to him about that.