Fan Casting 1st Death in Detention

Matt is alone in the classroom, leaning against the teacher's desk and looking out the window. Suddenly he feels a sharp pain in his stomach and looks down where he sees a bloody knife. He tries to scream, but his voice catches in his throat. The person behind him starts slicing the knife upwards, splitting his belly in half. Matt tries to grab his guts, but it's too late. He falls to the ground, dying in a pool of blood.