[recycled sixtie]

About twenty years ago we took our black lab to obedience school out of town. There were no shock collars used and the woman instructor used simple commands. I think we went for about ten one hour sessions. We took our lab to two sets of classes as she was not a great student.

She was certainly much improved but still liked to jump up at people. I congratulate you for taking some action towards improving your dog's behavior. I remember though one German shepherd dog was too aggressive during the first class. The teacher sent the dog and owner home as she felt the dog was untrainable.