5. Doors should be locked during instructional times and when the door is not actively in use.
Some schools require teachers to teach with their doors locked as a preventive measure. The way the school operates can impact the practicality of this approach, but in general, it is only a small adjustment to make in the school culture. Some educators feel that keeping doors open creates a positive and inviting environment, but from my experience, a locked door does not have a negative effect on the class environment. Throughout my K-12 and college educational career, most of my more effective instructors kept the classroom door locked as a standard operating procedure. Aside from the safety benefits of doing this, it also creates an emphasis on timeliness, professionalism and discipline among students.