Taos
After a minute or so of silence, he lifted himself up from where he landed on his bed, now sitting up on the edge of the bed frame, his eyes observing his skateboard for any slight hint of cracking when he had heard a knock at the door. Setting the board against the bottom of the bed's head rest, he stood up, straightening his bed back to how it was before he jumped onto it.
Approaching the door, he heard the voices of... two girls? They're here already?! Taos thought to himself, giving himself a mental slap for forgetting about the school's "experiment". They were introducing themselves to each other, before a third student's voice entered the fray, one asking about a scream, but this new voice was that of a boy's, who had introduced himself as Kagura. After taking a deep breath, he grasped the doorknob, turning it ever so slowly, before silently opening the door.
Reaching for the sign, he noticed the trio of students. The two girls - one with silver hair (or was it white?), the other black, were facing to a redhead junior, one that he had seen only a few times before. He wasn't sure exactly what grade the two girls were in, but he raised a finger to his lips, signaling the junior not to say anything, to keep the two girls from turning around. He silently pulled the sign from the door, setting it on the small desk next to the door frame, taking a small notebook and pencil before slipping out and slowly closing the door behind him, keeping it as silent as possible.
As he closed the door, making little to no sound, he leaned onto the outside frame of his door feet, giving the same junior an "all clear" signal, hoping that the redheaded boy understood what Taos was trying to do.