I’ve been pondering this question lately. In our school setting there tends to be a divide (not a division but just not interconnectedness) between the high school staff and the elementary staff. This happens because most of the high school staff is part time and teaching a couple hours a week is only a small part of what they do. They tend to not linger around the school building more than necessary.
However, over my teaching career the staff has had varying degrees of rapport. Currently we enjoy a great deal of rapport and I’ve been contemplating what makes it so. Over the past few years several of our teachers have been from out of the area with no immediate family here. School and those associated with it have become their home and their attention is not pulled away by as many other things. This creates a core for connectedness to revolve around. We also have a staff room in which we tend to congregate immediately after school for the informal coffee time chat and snacks. We have a parent body who does a good job with food treats or we teachers may bring things for snacks. Food is always a good teambuilder. We will sometimes do things outside of school together such as a shopping trip, going out to eat for supper, or attending other schools’ programs together. Last year the school board and teachers stayed overnight at an Air B and B together enroute to a teacher conferance. This was a good time of getting to know each other outside of school.
For rapport to be built each person needs to give of himself. If one is only concerned about his affairs he doesn’t connect well with others.