Talk to the instructor before the class. In most places, there are no licensing requirements to become a trainer so check out the instructor's credentials. Instructors who are associated with the National Association of Dog Obedience Instructors or with an AKC all-breed or obedience club may be a good choice. Even a very well trained Dalmatian may occasionally surprise an owner by coming up with some unusual behavior. It is just their way of being sure they are never taken for granted.
Dalmatians are house dogs.
They are very social and need to be part of the family. Dalmatians who are confined to a yard or kennel away from family activities frequently become barkers or diggers. This is not to say a Dalmatian cannot be left alone during the day while the owners are at work. It is just that when the rest of the family is spending time together at home, the Dalmatian wants to be apart of it. The short coat renders them unsuitable to live outdoors in cold climates.