Is teaching a craft of a science?

For many people, teaching is a science because it needs accurate teaching skills and to transmit the knowledge precisely. As far as I am concerned, I see teaching as a craft. Teaching should be along with lots of things interacting with human being, and not just a serial of impassive mechanical action. When the teaching proceeds, it is not only knowledge transmission but interaction of teachers and students. So I think teaching is a craft fulling of art-like skill that deals with the human relationship.