We did the same calculation for commercial pilots. We used no pay, but tip $25/pax to the cockpit crew, $15-captain, $10-copilot for what was essentially a cross country bus ride. It was 3 times what we were actually paid...which wasn't bad in itself.
Teacher's pay can be low. Some at the top end of the scale are making decent money. But their work is invaluable in perpetuating ourselves as humane, intelligent animals. Much more important than slogging a family to Disney World.
@GregStolze @jeffowski A 5-piece band I was in played 2 1/2 hours of music. We had people dancing out the door, down the stairs, and saw them dancing out in the parking lot through a window. We earned $25. The club owner said, "We only pay you for the number of people in the bar when you start."
I absolutely despise music. Not making music. The business of music. It's rip-offs and cocaine all the way down.