Legal and Ethical Concerns Regarding Video Recording Class Sessions

In the Level 2 Module, I explored the idea to offer library computer class content online instead of only in the traditional setting, and consider a future with a more "flipped" approach. 

One idea I have is to record a typical class session with real students, and turn that into a video lesson online. I feel that authentic questions asked and the real classroom dynamic would really have more impact for students learning specific topics.

If I were to implement this idea in my current County Library situation, I would need to get permission slips signed by my students to use their likeness, even if it was the back of their heads or even just their voices. 

Or, alternatively, I would only focus the camera on me, edit out all audio of students questions, but be sure to reiterate the questions, and perhaps use text overly in the video to highlight the question. I already do this normally in class as a teaching mechanic so it should not be very difficult to keep my flow. 

In the interests of accessibility for a wide audience, I would implement closed captioning and text based summary in the details of the video, and I would monitor any words or phrases that could trigger negative responses in my audiences. Potentially, I would disable commenting on the video directly, but encourage students to interact with me or each other in a less public online venue.