Apparently, a few teachers, both from the United Kingdom, have used spy cameras to catch their students misbehaving.
One teacher, Alex Dolan who is now a journalist, shot footage of students for a documentary. Disciplinary actions are being taken.
Another is a supply teacher, Angela Mason, who also filmed students “misbehaving” and aired the footage in a documentary.
Without a doubt, people should know if they are being filmed, told if they have been filmed, and releases should be signed if footage of them is being used.