Student sucks prof in bathroom — his grading method? 😳

A young woman in a school uniform and glasses kneels in a tiled bathroom stall, performing oral sex on a man whose face is not visible. Her hair is tied with colorful clips, and she has tattoos on both arms. She alternates between deep-throating and holding his penis with her hand while looking up at him, her expression shifting between concentration and mild discomfort. The setting is dimly lit with a modern sink visible in the background.