my daughters used an experienced hunter/jumper trainer for summer camps. I was concerned about safety, etc. as well, and discussed it with the trainer. She insisted on starting with the ground up...i.e. cleaning stalls, grooming, safety around horses, etc. before they even got ON a horse. Then it was lead line until they learned balance, posture, hand position, etc.
I don't know Christian, but I'm sure if you call and ask how she addresses these issues, she will let you know.
Most hunter/jumper trainers are meticulous in their training styles with safety for the rider AND the horse at the forefront. My girls stayed in it for years after that first summer camp !