[Derek]

You return to your classroom with a large stash of weapons.
"Report, Samantha?"
"Everything has been relatively quiet. There have been a few objections though. We have them tied up and put in the corner over there," Samantha replies expertly, pointing to the upper right corner where three students laid, restrained.
"Good, good. I shall deal with them later," you say approvingly. You pick up a can of soda and toss it over to her. Samantha catches it and nods appreciatively. _She has decent reflexes. It might be time to train these guys up soon. But first..._ You store the newly acquired equipment into the cabinets but hold onto a cheese grater. Afterwards, you saunter over to one of the tied up students and roughly drag one of them into a connecting office. _Let's see how well this works.._ You put the kid on the table and tape him to it, preventing him from squirming too much. Grabbing the cheese grater, you run it over the boy's arm. It shreds the skin and blood begins pooling down onto the table. The boy lets out a scream and writhes in pain. You repeat the process over the same patch of arm, eliciting another scream from the boy while he redoubles his effort into twisting free from his binds. You laugh maniacally, "Don't worry, we're _far_ from over. This is just the beginning." 

You scrape up the student's entire right forearm until it is an unrecognizable bloody, mangled mess. _It wouldn't do for him to die from blood loss after all._ His shrieks of pain and terror were music to your ears though. Your ears pick up on a faraway scream, coming from MST. _I'll have to go investigate that._ 
"Nicholas, Lauren, you two are coming with me to do some reconnaissance. Do _not_ reveal your presence to anyone nearby. Keep behind me. Ariel, Samantha, make sure everything stays quiet until I come back," you order. _Leaving the twins alone together would be unwise. Since their loyalty is clearly to each other first, and then me._ 
You turn towards your group, "Let's go," and start stealthily making your way to MST.