If you want to use the film in class or have it available in your library, the Public Performance Rights (PPR) is the best option for you.
A PPR license allows you to:
Show the film during class to enrich curriculum
Include the film in your physical library, available to members, students and faculty
Hold screenings at your campus
All licenses are unlimited: you can show the film as many times as you want
All licenses are in perpetuity: you don't have to renew them