Training

at any school there are only so many backing scenarios you can do--for the odd back ins--yes the trainer should be training the new guy how to set up and help him out
when you first get your license--its really still just a license to learn--the schools can only teach so much--and usually it is just what you have to do to pass the test
and it almost sounds like you do that to a point as well rerun--since you say you use the same yard as they will be tested in------take them out in the real world

 

we cannot enter private property......is THAT a REAL WORLD enough answer for you...???

if one can back up and pass the tests, one can back up by figuring out what to do...it's called, "using your head".....after all, no one can hold the hand of a newbie forever, sooner or later, the newbie has to use that brain he/she has for something other than texting or playing video games. perhaps if one has to be hand held through out thier entire life, then they should apply for "special assistance" from the government and stay home...?????