Photography school is exactly what is states that it is. It is a school of photography. Photography school is a place where those who either wish to learn about photography, or wish to learn even more about photography can go and study their passion. Unlike going to a college where you take photography as an elective, at photography school, it is your main focus.
There are a few main fields that those wishing to attend photography school may want to look into. Ther is the advertising photographer, commercial photographer and the portrait photographer. Of course these are not your limits at photography school, and it will be different depending where you go, but those are three main job fields in photography.
Photography school may also offer a few programs that will where is it with the world of film. Whether you'd like to enter into the world of digital photography, or film photography, you'll have the chance to choose and grow in either field, or both fields.