I know this is a long shot but worth a try...

I am looking for a movie which I accidentally came across a while ago, while researching about music in porn. It might be late 70's or 80's movie. Since, I do not remember the movie name or the actors, I couldn't find out much. I know the story a bit, it goes like this..

There's a broken town with taboo being a common phenomenon. New teacher moves into the town, she plans to reform the kids.
She starts affair with a student reluctantly I assume & later gives in. Student takes advantage of her.

The movie ends with the teacher being forced to have sex with all of the students fathers I think & she's forced/kicked out of the town. The ending scene is teacher leaving the town in her car, with music playing in the background.

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