Any presentation without the instructor present would be an infringement. The instructor and the students must be together. Closed circuit transmission and distance learning are gray areas at the moment. Performance must be limited to teaching activity. No recreational movie watching.
Performance takes place in a classroom or similar place devoted to instruction.
The key here is that a space is considered a classroom at the time the instructor and students are present. Notice that is does not matter if the video shown is labeled HOME USE ONLY or not. Any legally acquired film or video may be shown in class. Because of the nature of film and video, what is meant by public performance is always an issue. Clearly, showing a work in the classroom as part of the curriculum is accepted practice.