Hey Bruce, apprenticeship can take any form you want them to if someone else agrees. I ran an apprentice program on my farm. Thirty hours a week of work for room and board (farm food), daily lectures, demonstrations and all around good times and back breaking sweat making labor! Had as many as twelve folks at a time, usually 6-ish, for 3-6 months each. It was my favorite aspect of my farming, once I developed an adequate application and screening process.
They were hard on tools though. It was extremely rare any of them passed muster to run the tractor equipment, especially considering our average grade of 12-15%

. Farm truck windows and light lenses took a beating. Hand tools disappeared all the time. It just got to be that I started to factor in replacements as part of operating costs.
One time a young fella was driving my 1 ton flat bed up the hill and stalled. He panicked and put both feet on the "breaks" (right foot on the accelerator, left on the clutch). Of course he immediately started coasting backward back down the hill. He didn't come to a stop until the truck took out a 12' foot tall hibiscus hedge, sailed over a 3' stone retaining wall, flattened an anthurium garden and finally came to rest by bottoming out on another stone retaining wall. The poor guy couldn't even walk or talk for sometime.
By the time I stumbled across the scene his body was still looking for its blood as he was whiter than a can of crisco. The poor fool was additionally scared I was going to kick his butt off the farm. Surprisingly outside of having to patch up the fellas esteem, drag the truck out with the tractor, rebuild a couple lengths of stone wall and grieve the loss of some several decade old hibiscus all was okay.
I guess we were lucky to make it through all the years of working with young, and/or otherwise newly experiencing folks, with all of our limbs and body parts attached and whole. We had lots of fun growing hundreds of tons of healthy food for folks. I'm sure bladesmithing and knife making apprenticeships can be rewarding too.
Jim, thanks for the invite. If I ever get anywhere close to your neck of the woods I'll take you up on it.
All the best, Phil