Your student nervously confronts you after class one day. You gave her a D on her last essay, and she can't understand why. "I don't want to accuse you of anything, but... some girls say you give bad grades so they have to do stuff to bring their mark up." You can tell she's desperate; if she does't get an A on this she might not get into the colleges she's been applying to. "Look, I'm not going to tell anyone... if you want me to suck your dick I will! I just need the grade." She begins to suck you off, dirty talking about how many of your students you've fucked and what a perv you are. "Sucking my perverted older teacher's cock... that should be worth an A right?" You tell her a blowjob would get her a B, at best. Unsurprised, she offers up her pussy and admits this is sort of turning her on. You begin to fuck her, before breaking it to her: only anal gets you an A. "What? No! Not my ass, anything but my ass! I'm an anal virgin!" she protests but with no other choice she eventually gives in and lets you shove your big dick in her virgin asshole. She squirms and moans in pain as you start to fuck her, slamming her little body down on the desk and taking her anal cherry. She tells you you're a perverted teacher, using your students like this... fucking girls in the ass in the very same room where you teach... out of spite you pull out and make her taste herself off your cock, before shoving it back in. As she warms up to the feeling you can tell she's starting to like it. Soon she's cumming with your dick up her tight little ass, screaming for you to cum with her. You creampie her newly used hole and watch it leak out. Was it good enough for an A??