His Lordship is not the first to see the link between greasepaint and chalk. Good teachers have always known that acting skills are vital.
And good trainers have long recognised that it is foolish to tell a novice teacher: "Don't worry. Just go in there and be yourself." That's a sure way to be eaten alive.
Actors have much to teach young teachers about the use of voice, gesture, props and humour. They could also teach them how to take a bow. That skill is seldom needed at present, of course. But, like the resting actor, one can always dream of better times.