In the near future film photography will likely be relegated to artists much in the same way etching and other printmaking processes changed from everyday art to fine art. Picture post cards and mementos were made and sold by artist-printmakers before the invention of photography made them obsolete. Photographs, depending on their purpose, inform us, remind us, move us, entertain us, amaze us, sadden us, amuse us, and accuse us. In a classroom setting today, it can be less expensive, safer, and more applicable to teach digital still photography and video motion photography compared to using silver based film and chemistry. Good art units and lessons can be based on either process.
Most schools have video cameras and many have at least one digital camera.
There are many approaches to developing ideas for art. These three types cover most photography. Some artist-photographers look for pictures and take lots of them. They use lots of film and take lots of exposures. Photographers like Gerry Winogrand are always looking and searching for a great picture.