SATAN'S SCHOOL FOR GIRLS 1973 (CHEEZY FLICKS)

Nifty little TV movie about a young woman investigating her sister's apparent suicide after leaving an exclusive girls school. Pamela Franklin is the woman doing the investigation and she soon finds the school is run by Satan, played wonderfully by Roy Thinnes.
Produced by Aaron Spelling this also stars Kate Jackson and Cheryl Ladd, both of whom would go onto greater stardom in Charlie's Angels a few years later.
This is an entertaining film that is full of twists and turns and when I first saw this I was surprised by the ending. I do recommend this for a rainy Saturday or Sunday if you can find a copy of it.