Pat Hoffmans dog training school is excellent. We took our dog when he was about one and half years old. She explained how the training would work. She said that one of the best training tools was the spiked choker collar which I wasn't very keen on. However, after her demonstration and using one on our dog I became very comfortable with it. She is very good with the training class and used dogs in the class to demonstrate which shows everyone that it really works. I recommend her training school all the time.