We watched the movie of it when I was in grade school. I've never seen the *exact* same version. At least I don't think so. I've looked occassionally but never one that jumped out at me. It was not a cartoon, I can still picture parts of it. I think it may have been narrated. It's possible it was specifically made for school too. I must have been in 2nd or 3rd grade.
I don't know if I ever read the actual book but it is one of my favorite stories.