I think I actually saw this film in Health when I was a high school freshman. It was a moralizing (or demoralizing!) polemic about loose girls, girls with "a reputation" and girls you could drive up to on the street and get to go for a ride with you, called "pick-ups" back then. Dire consequences would surely ensue from straying off the straight and narrow and indulging your urges. If that's the one, it is a very weird, strange, somber little film.