From the ChattState copyright policy about the Face-to-Face Exemption:
Face-to-Face Teaching Exemption -The Copyright Act permits the performance or display of copyrighted materials during face-to-face teaching activities without getting the author’s permission. This exemption does not permit copying or distributing a work – only displaying or performing it.
As long as the audience are enrolled students in the class and no other attendees then the Face-to-Face Exemption may be used for educational purposes.
