Sierra made her way throughout the classroom, walking directly past the professor's desk in an attempt to snag a seat on the opposite side of the room. As she walked by, she happened to overhear something about an eraser. Glancing at the professor out of the corner of her eye, Sierra saw the woman searching for something.

For...an eraser, maybe? ...but couldn't she just use a wand for that? It'd be easier and certainly less, ...well, Muggle-ish. Sierra shrugged to herself then continued her walk, stopping when she got to the desired desk. She sat down and waited for the lesson to begin.