Expelled bad-boy student James is accepted at a prestigious high-school, only to learn his teachers are blood-sacrificing devil-worshippers with an eye for troubled pupils.

A cowardly pastor must protect his flock of bible-students when their remote camping ground is infiltrated by devil-worshipers hunting human sacrifices.

What happened to the bad-boy? Wouldn't he be the one to lead the students in their rebellion?

When bible-students discover their school-camp leaders are devil-worshipers in disguise, a nerdy-student must shepherd his younger colleagues to safety before becoming human sacrifices.

I guess I'm trying to say they'll become human sacrifices...i.e. dead.
I'll rework it. Thanks for the input.

woobot, I think you need to add what happens if the nerdy altar boy doesn't lead his fellow students to overcome the devil worshippers. What are the stakes? Will the school blow up? Will it be the end of the world? Will Satan possess all on the earth and have everyone kill each other?

When school-campers discover they're being groomed for a black-mass to raise the devil, a nerdy altar-boy must lead his fellows to overcome their devil-worshipping teachers.