Arya was sure this class had nothing to do with creatures, and she probably wouldn't be taking the OWL if things got too busy for her, so she didn't know why she was attending the lesson. Maybe because she wanted to see who would be teaching it? Curiosity and what not.

There was a bit of disappointment in not seeing Truebridge's face when she entered, but no surprise. "Hey, Professor Christiansen." Her curious eyes lingered on the board before turning to the man himself for polite smiles. Sitting in the center seemed the best idea, and she slipped into one of those seats, smile growing as she listened to her friend greet the man. But no, she wouldn't be giving him the same greeting.