The Instructor's Cut is an edited-down version of the material in the expanded edition. The expanded edition contains over 40 minutes more material of related topics over and above what is required by the license-to-carry law. There is information on methods of concealment, the effects of PTSD (post traumatic stress disorder), and anecdotal cases of people in life-threatening situations (those who did it right, and those who did not). In other words, the expanded version is just that, it provides more than just the basic information required to be taught in license-to-carry classes.
It's to further distinguish it from the Instructor's Cut as the longer-running edition having "expanded" and in-depth topics of information.
You can use either edition for classroom instruction.
No.