This is the original cinematic 'Carrie', and though I know the story pretty well from cultural osmosis, I've never seen a version of this before or read the book. Interestingly De Palma's 'Carrie' is the first film version of a Stephen King novel, and also interestingly it happens to be of King's first novel. This is a real strong start for what would turn out to be a veritable sub genre, the "Stephen King Film".
I knew going in how iconic this film was, while I haven't read the book so can't fully speak on it as an adaption, as a movie it gets everything right, much as would the second King feature 'The Shinning' four years later (though King was famously dissatisfied with that film as an adaptation, as a film in its own right its momentous). 'Carrie' is well cast, well acted, well shot, well paced, well structured, and leads up to a climax that is probably still King's most iconic.
There are some things I had assumed about the story that turned out not to be true here, in addition to the PE teacher there are in fact a couple of students who turn out to be sincerely wanting to help Carrie, Amy Irving (who De Palma cast in multiple films) and 'The Greatest American Hero' himself William Kitt. Sissy Spacek and Piper Laurie are so wonderful in their roles as Carrie and her mother, that its hard to imagine they could every be surpassed. 'Carrie' is another classic for a reason, De Palma could seemingly do no wrong in the late 70's and early 80's. ****