I checked out the scene with the teacher and student and I can see how the woman felt what he did was inappropriate even though she was crying.
Grant it, nowadays, you pat a child on the back, you are a bad person or hug a child, you are a bad person but the woman just seemed like she was out to get him.
I understand the need to be careful and protective of who is around your kids but sometimes its taken too far,as it was in this case.