Shelly wants to get a good grade and she's prepared to do anything for it. Anything, including fucking the teacher
It's hard to tell who seduces who in this movie. Shelly doesn't expect to get fucked by her teacher, no, but she certainly doesn't do anything to prevent it. She has a wanton look in her eye right from the start and it's clear that she's been dreaming about fucking her tricky old teacher. It's also very clear how horny the dirty old teacher is too. He wastes no time at all getting his nob stuck down Shelly's throat before fucking her nice and hard in her cute, little wet pussy! This is an awesome scene.