Cammy
Your teacher waves you out of the classroom without even breaking stride in her lecture. The shadow is no longer at the door.
Omen
"Look, Ollie, I know you just want to help. And I think you know why he's so insistent on getting this thing back from you."
Void FistOOC:
Sure, I'd say
Straight. Up. Creepin'. applies here. Go ahead and roll +Mundane.
Mimic
No one really knows what to do here, but a few of them recognize you, so you aren't stopped seeing as you're probably doing something important and superhero-y. The teacher awkwardly tries to get back to his class even with you in the room, which doesn't exactly go well, which ends with him picking up a phone and calling someone once you've left.
Aeon Crow
No one comes out of any of classrooms to stop you, but on the way you do run up behind someone in the halls, a fellow student trying to talk to what looks like a shadow standing there. You hear whispering coming from it.
Konrad
Once you get close to it it spins around to face you, and you can hear loud whispering in the back of your mind, like many voices all trying to talk over each other.