How bad is it? It's at that valley of quality between horror films and exploitation films.
Should you see it? Yes; it has some camp appeal.
This films stars John Ireland, Yvonne DeCarlo, John Carradine and some busty women who don't look much like the teenagers they're supposed to be. Satanists abduct four cheerleaders and a teacher. One of the girls turns out to be a real witch and points out that they can't sacrifice a virgin because they've raped the only virgin... the teacher. DeCarlo has some great lines ("Kill! Mutilate! Destroy!") and she gets killed by dogs. In the end, the girls use their powers to help their school's football team win, because, well, they're cheerleaders.