I probably didn't explain this clearly enough, although I think WilsonFlyer understood what I was getting at.
My friend volunteers in classrooms (and other places like libraries) with a dog in a Reading Therapy program. He asked me to take pics of him, at work in one of these classrooms, using my camera, for his own personal use. The teacher said it was ok. My friend is CORI'd. He's also worked really hard training his dog for this. They go into hospitals as well. I would be doing this as a favor to my friend, no money involved. I've taken many pics of him and his dog together before and he knows I like to do it - but these have always been outside with just the two of them, not in a classroom.
Once I give my friend the pic, I have no control over what happens to it.
My concern was, as the photographer (with my camera) owning the copyright, if these pics wind up on Facebook or somewhere that a parent (or parents) objects to, that I could be held liable.
Since I would like to help my friend out, I thought maybe I could just use his camera. But I wondered about my own liability in this situation as well. The first few posters seemed to say that as the picture taker, I would at least have some involvement of liability - if there was some. (And yes, I know it's unlikely, but you never know in today's world.)
I'm sure I could frame the pic (if I do it) without showing kids' faces.
FWIW, as I mentioned before, I take pics of my own kids' classrooms and sports teams and such, but in these cases I know they wound up in a school sanctioned yearbook and in our own family albums; and in the case of sports I only share my pics with other team members and grandparents and such, but I do give all parents the option of "opting out" at the beginning of each season in case they have objections. So yeah, I take it pretty seriously because I know how people feel about their kids' pics.
In this case, I just don't know that I feel comfortable with it given that it's a classroom situation.
I know as a parent I have to sign waivers at the beginning of the year to allow my kids' image to be used for school sanctioned pictures. This is different where it's not for school use, but for personal use.