can't remember name of movie.
 

I saw a movie between 78-81. It was a black and white movie about sorority girls. All I remember was the main character had shoulder length brown hair. and all the girls were wearing white nightgowns and the girls were out to get the main character. I think the girls wear witches/demon worshippers. Any idea??? it was kind of creepy as there was running around in the dark.

The only thing I can think of is Suspiria

Dear god this old ....sorry