Christian faith IS a shield. I have a problem with the teacher allowing her to instead write a story imagining selling her soul to anyone and anything. Imagine the outcry among the left if the teacher had assigned a Muslim student to write an essay about abandoning Allah - or if she had assigned her class to write essays about giving their souls to G-d. One would think the fate of Western civilization was at stake in that case. Wolf's defense aside, if one can't mention G-d then one should not be able to mention the Devil either.
Who said anything about not being able to mention God? Have you ever taken a High school English course?
Most high school English courses teach early American literature and since religious Puritans basically settled America (remember pilgrims from Thanksgiving) most early American literature is biblical by nature. Heck, in my English class we read and studied the King James bible as literature.
We read Sinners in the eyes of an Angry God, Scarlet letter, Devil and Tom Walker, and other stories that dealt with God and faith.
If a Jew, Muslim, atheist, Hindu or anyone else wanted to read Jewish, Muslim, Atheist or Hindu stories, tough cookies. There isn't a strong Jewish, Muslim, Atheist or Hindu bent in early American literature. I would think you'd be all for this, the teacher is teaching about Christianity's role in early America!
The point of the story is that selling your soul to the devil is a loser's bet. No matter what you get out of it, the devil always comes out ahead! If the girl had just written an essay saying nothing is worth selling your soul over then she'd have received an A and shown she understood the story!
What a horrible turn of events if we stopped teaching children about the Christian roots of our country because .... Christians don't want to read about the Christan roots of our country?