Driving school: car with Hanganfahrthilfe permitted?

Hello I have a question about Hanganfahrhilfe-Fahrschule/Fahrprüfung. My daughter has completed her driving school with a driving school car, which has a Hanganfahrhilfe. Due to the 17s regulation, in which she is only allowed to drive with company, I personally had to realize that she was not able to drive with our, older second car at intersections with slight incline, without rolling back clearly. Otherwise she drives quite well. It was obviously unknown to her purpose to use the handbrake in order not to roll back. On request at the driving school, I learned that the driving school car has a hangan assistance and that the starting on the slope was practiced. In addition, it was informed that the starting on the mountain was no longer part of the test range for a few years and that one would not buy an old driving school car, without a hangan assistance, to be able to practice it properly. nganfahrhilfe could practice the approach to the mountain meaningfully, so that you can also start with older cars, which do not have this automatic, later safely on the slope, unfortunately could not be explained to me plausibly. You have to accept it now really, that driving students have to do at least feel hundreds of obligatory hours to get a good (and expensive) training, this important driving technique, which is necessary for driving cars of the lower price class m.E. now, that a Is this really no longer part of the scope of the exam and if it would be part of the scope of the exam, wouldn’t driving school cars with a hangover aid be actually inadmissible? (With an automatic car during the exam, you won’t get a driver’s license for switchcars after all)