One thing teachers should be aware of is that unlike the dark ages schools are not run as prison camps. They exist to a great extent on the implicit if passive acceptance of the status quo by all parties.Part of that implicit social contract is a notion of fairness. Now by the 70’s legitimacy had become quite an explicit concept in the vanguard of student thinking. Steve ans I have both in different ways illustrated this in out own experience, but it was also seen on a much wider scale .
Certainly by the 70’s ‘because I say so’ was NOT an acceptable reason for obeying authority . Authority has two vectors, ‘rights’ both of the instructor and the students, and ‘responsibilities’ again on both parties. If this balance is broken the essence of legitimacy disappears and we are left with a simple power struggle.