(Speeding things up)

About five minutes after all this, a young boy, only around 12 or 13, begins coughing violently. An administrator runs to the boy's aid, and the boy's skin begins to turn green... The boy begins to look gaunt, his eyes bagging and slowly closing. The administrator begins to shake him, before turning her head around and calling for someone to get the nurse... Only for the student to jolt up, eyes pure white and skin green, and sink his teeth into the administrator's neck, pulling out a chunk of her flesh and tearing her jugular. Her eyes go wide as she falls to the floor with a thud, and she bleeds out slowly after... Only to rise up like the student.

All hell breaks loose. The zombies attack more students, who turn into zombies, and everyone else panics and runs for the door. Now it's just you, a few students, a teacher, the nurse, and seven zombies slowly advancing toward you...
[@Polyphemus], [@Delta44], [@BreakingMe], [@Beekeeper], [@ramblingbard], [@akirashadow]

(From this point on, NO META-GAMING! That means you can't say that anything happened in your post unless I SPECIFICALLY STATED that it happened. Also, the students never knew about the details of the virus, all you know is that it turns people into zombies)