She needs to know that she has failed.

She may have tried hard and only one girl among the forty in her class has succeeded, but that's no excuse for failure. You gesture for her to stand up and bend over her desk.

She obeys, but hesitantly. That's another mark against her.

Bent over her desk she pulls her tiny skirt up over her ass and spreads her legs, then reaches back to spread her pussy open for you. She's wet and inviting and when you slide the tip of your spit-wet cock along her slit you can feel her warmth trying to draw you in, but you resist the temptation. She needs to be punished.

Instead of filling her pussy you slide up and start to push into her ass. She whimpers and tries to pull away, but you grab her shoulder with one hand and her hips with the other and hold her down.

"Stay still. You're in enough trouble as it is."

"Y-yes, Class Manager. Thank you, Class Manager." Her voice is tight and her body stays tense until you're halfway inside her, but by then the chemicals in your precum have worked their magic and she begins to relax.

Fucking a girl up the ass isn't your favorite way to take pleasure, but it sure beats jerking off and as a mild form of corrective punishment it works wonders. Most learn to enjoy it soon enough, but until then it's a good way to show a student she has failed without going through the hassle of contacting an Administration Officer.

You've just started fucking her for real when you hear Teacher Glass gasp, and you take hold of Student 36's hair to direct her gaze towards the front of the class. Teacher Glass is stroking herself now, the tip of her cock resting on Student 22's outstretched tongue. She has one girl on each side, both of them with their faces tilted up and their mouths open.

"See? That's the reward you get when you learn. Your. Lessons." You emphasize the last words with harder thrusts, making her gasp with the intrusion.

"Y-yes, Class Manager. Tha-tha-thank you fuh-for teaching me, C-C-Class Manager."

When Teacher Glass finally releases her massive load of cum on the faces of her students, you slow your thrusts and reach down between Student 36's legs to rub her pussy while keeping her head facing forward, adding some positive reinforcement to the image of her teacher spraying her sperm over the faces of her classmates. When Student 22 and the other two move forward to lick and lap up Teacher Glass' thick cum, first from her cock and then from each others faces, you push two fingers into 36's pussy, fingerfucking her while you slowly move your cock in and out of her ass.

It doesn't take long for her to cum, her pussy spasming around your fingers. You pull them out and push them into her mouth, fucking her ass while she sucks the juices of her pussy from your hand. Her eagerness to please tips you over the edge and you fill her ass with your sperm, and judging from her moans and the way her hips move that has sent her into another small climax. Your last few thrusts as you cum are deep and hard, and even before you pull out you can feel your cum trickle out of her.

"Will you try harder in the future, Student 36?"

"Yes, Class Manager Azure. Th-thank you for teaching me."

"That's a good girl. Now get down here and clean me up."

"Yes, Class Manager. Thank you, Class Manager."