What do you think is the most important role a teacher plays?

Every role a teacher plays is important, and some children specifically benefit from one over another. I don't know if it is the most important, but one role I have found that helps each child at the same time, is being a classroom manager. Some students have a particularly difficult time learning with distractions around them. A good teacher is very aware of the entire situation of the classroom, and manages it in such a way that is conducive for all the children to be able to learn and to be safe. I have started observing in a new classroom (4th grade) and one thing I noticed today is that the teacher was very good and disciplining in a way that wasn't shaming to the children. He would instruct and discipline one child on an individual level, instead of in front of the whole class. I think this is a good way of managing the classroom, because even though there is a large group of students, there is still one-on-one attention where it needs to be. It also makes the children feel safe, like they aren't going to be made an example to the class. Another thing he was very good at, was validating students for positive behavior. There was so much focus on the positive, that there was significantly less negative behavior than what I've seen in the other classes I've been too. I love being able to see the different teaching styles each teacher brings to the classroom.