The guys try to rebel but Jenna punishes them

The next day Jenna enters the class with a smile in her face. As soon as she enters all the guys in the class go to their seats in silence. “Good morning. “As I said yesterday, I will explain the new system. Your grade in the exams will dictate your dick size until the next exam”. Jenna shows the guys the table that relates the grades with dick size. Of course, the guys seem terribly worried about this.

“So, if I get less than a C, I will get a micropenis?” – Asked Ben Jackson, a mediocre student.

Jenna giggles. “The idea is to motivate you. If you get a good grade you will have an average dick, if you have a mediocre grade, you will have a mediocre dick and if you fail, you will have a microdick. Simple as that”.

“Excuse me, Mrs. Fletcher, but I think it’s unfair that a B, which is a good grade means only 3 inches soft and 5 hard” – Said Andrew.

Jenna laughs “Oh, Andrew, it’s funny that it’s you who say that. I have the statistics of all of you. You are the smallest of the class so if you get a B you would be bigger than you are now. If there is somebody in this class who can benefit from this is you: a good student with a small dick”. Andrew blushed but thought about what Jenna said. She was right: he was a good student and maths was his best subject. It should not be a problem for him to get, at least, a B.

Finally, Phil raised his voice, “Mrs. Fletcher, we cannot allow this to happen. I know, we can be difficult as a class but this is too much”.

Jenna smiled at him and took her phone “Listen, Phillip, let me tell you what’s difficult. I am a 25 y.o. teacher who is starting her career and I have to teach a group of 18 and 19 y.o. boys who do not respect me and that they are continuously checking me out: That’s difficult”. Jenna meanwhile fumbles with the app, she selects Phil and increases his horniness to the maximum. Obviously, he gets erect immediately, and an obvious tent is forming in his tight jeans. Jenna increases now his erect size to 10 inches. Of course, his jeans does not allow his dick to expand to the front so he had to adjust his now enormous cock to his right leg. As his jeans are so tight, the giant bulge is clearly noticeable through the clothes.

Phil, of course, is clearly surprised by this. Still, he tries to keep speaking with Jenna in a calm tone but he is so horny because of the app that he has trouble in being coherent: “Mrs. Fletcher… erm …. I am so sorry…. I promise, we will get better”.

Meanwhile Jenna keeps changing Phil’s specifications: She changes his ejaculation settings from shooter to dribbler and his cum production from medium to huge. After that, she presses the ejaculate button.

Phil shivers as he notices a river of sperm going down his leg. After a few seconds, there is a puddle of cum next to his right foot.

Jenna laughs. “Phillip, as you can see the control is mine now. So, all of you made my life a hell until now. I am not going to be as vindicative to make your life a hell as well but I will be tough, I won’t tolerate any complain or disrespect toward me or the girls in the class. I could have been much crueler to you right now as I was to Michel yesterday, but I am giving you all a fair chance. If you behave and get good grades, you do not have anything to worry”. Then, Jenna presses reset and Phil’s settings go back to normal. Obviously, his jeans are completely stained in cum.

Jenna resumes the class and starts explaining some complex equations: “There will be an exam on this next week, so guys, make sure you understand them if you want to have a decent sized dick”. It’s clear that the guys are alarmed because they did not expect an exam so soon, but no one dares to complain.

The rest of the week goes very swiftly. Jenna is able to explain the equations without interruptions. The guys are paying much more attention, and they even make relevant and interesting questions about the topic. Even Michael seems motivated. However, she uses the app a couple of times during the week: the first when she asks a very easy question to Ben which he is not able to answer, so she reduces his soft dick from 4 to 3 inches. It’s not a big punishment but Ben is clearly upset. She also uses the app with Matt, a guy who came late to class one day with some lame excuse she did not even bother to listen. As Matt was one of the most respectful students, she was not very cruel and she just decreased his horniness to the minimum. From her point of view, It was not even a punishment and more a way of motivating him. In any case, Matt was not able to masturbate during the whole week due to hos decreased libido.

Finally, the day of the exam arrives.