You glance down at yourself, and then over to a near-by student. He's tall, for a human. Much shorter than you are, of course. You walk over to him and grab him by the shoulders, pulling him away from the young Elven woman he was chatting up. You turn him around, and freeze his feet to the floor. “Stay still, I'm conducting an experiment. Official academy business.”
He seems worried at first, but far calmer than you expected. You examine his uniform for a while before channeling Fire magic into the air around you. Your appearance distorts, warping strangely for a moment before snapping back into sharp focus. Instead of the sturdy traveler's clothes you'd been wearing, you appear to be wearing the drab light brown on dark robes of a student. Really, they're entirely unbecoming. You don't know why they couldn't pick something stylish, or just disavow uniforms completely amongst the student body. You never had to wear some shit-colored garment as an apprentice.
You nod, releasing the student and pushing him towards his degenerate female compatriot. You turn around without a word and march towards the door to Demetrios' classroom, manifesting an illusory hood and shrouding your face in unnatural darkness as you slip through the door.
You find that Demetrios seems to be in the midst of some sort of lecture, talking animatedly whilst drawing something or other on a slate stone board with a stick of chalk. You slip into a strange combination of a chair and a table at the very back of the room. It has some sort of board attached to one of the arm rest, you can move it some presumably it's attached on hinges. Odd. Most of the other students are listening closely, a few taking notes on parchment, wax tablets, or writing slates made of the same black stone as the board.
(I'm impatient, posting it now)