If a seasoned tech comes to you and you hire them on ... you are paying them top dollar. Correct?
They received training elsewhere.
They learned the ropes, elsewhere.
They got thier act together, elsewhere.
They made the simple mistakes elsewhere.
And now that they have proven themselves worthy and have their own hand tools and knowledge ... you will be reaping the benefits of the training and instruction provided by "others" in the past.
But when you decide to hire a green horn and raise them up from inside your company by training them yourselves ... who should bare the burden of classroom time and study time when the service tech/ student is not out in the field performing hands on work?
I know you would pay them a wage of some sort, for OJT and ride a longs with a Mentor.
But would you also pay them to sit in the classroom, in your own facilities, and receive instruction by your own staff trainer?