Grad school in minor area

My son is in grad school (AFI) for film. His classmates come from many different backgrounds, majors, and countries. A good friend of his from undergrad just finished his masters at USC in film. His undergrad was xxx with a minor in film. At the time that friend started undergrad, Lafayette did not have a film major, only a minor. Friend did work for a year in LA in film industry before he was accepted into USC’s grad program.