When surgeon performs an operation he knows what he wants to do. There are specific principles to be followed. I doubt any of us would want someone operating on us who wasn't familiar with specific surgical techniques for the type of operation being conducted. Sure there is. In art, certain principles must be followed to carve wood, chisel stone, or blend colors, use brushes - after learning certain techniques, then you create.
Teaching is the same.
It's never clear cut even thought we often discuss it as such. Desirable personality traits 2. User of effective methods 3. Creator of good classroom atmosphere 4. Mastery of competencies 5.