The sound of footsteps alerted him to the end of his silence. Calvin checked the time, nodding to himself. Early. At the very least, not late. The man remained silent even after her approach. When he spoke it was because there was obvious need to. "A "good evening" will suffice." He replied simply. This wasn't a lesson, this was detention but her inability to differentiate settings didn't surprise him. It was more or less that reason that brought her here; not knowing how to act and where to act.

His hard gaze fell to his watch again as he mentally counted out the last minute of waiting necessary. At it's end he looked to her again.

"Before we go inside, I'd like you to take a moment of reflection. Tell me why you've been given detention--no sass, no snark or we'll be here all night. I'd like honest introspection." And if the honest reflection was disrespectful, he expected her to make it sound less so.