First lesson as assistant teacher

After your breakfast your group split up. Most of you had your lessons in different buildings. Mark and Rick were together in the Linguistic-building, while you and Frank were together in the Science-building. Jack had to go to the Work-environment-building and Chaz, in case he went or were taken there, was in the Human-Science-building.

The way to the Science-building, which was two buildings away from the cafeteria, didn't help with your hurting feet. At least you could support yourself on Frank for most of the way. In the building itself he had to stay in the basement, while you had to go two floors up. Down the hallway, which was filled with a lot of schoolgirls, you finally reached your destination: Math-room 314.

You hesitated, but finally knocked on the door. "Come in!" You heard the voice of a woman from inside. You opened the door and stepped inside. There you saw a woman sitting on the front desk. She had long wavy black hair past her shoulders, wore a thin-striped shirt with ruffled, only half-buttoned neckline showing her big round breasts, a purple skirt, black stockings and black high heels. Her make-up wasn't too much, fitting her age of forty-something. Additionally she wore a necklace with a round red stone and matching earrings, as well as a silver ring on her left hand. If it wasn't for the whole situation, you would have wished that at least one of your former Math-teachers would have been such a beautiful woman. Maybe you would have paid more attention to the lesson then.

"Ah, you must be the intern for the next six month." The woman said in a female voice, but with a clearly masculine undertone. Ms. Banks, as you remembered was standing on your paper for the time table, looked over your body and smiled as she saw your feet. "I see you already met Dr. Summers. Well, you'll soon get used to them. Every boy does. And then you'll never want too walk in anything else then heels. I speak from experience."

"You once were a man?" You asked trying to dig deeper into the subliminal confession.

"Was I a man?" She put on a wondering face. "I not always had the body and mindset of a woman, but since staying here for a few month I am the woman I always was meant to be." Now you were sure that she really was once a man and was changed in this school into a woman in body and soul, though she seemed to still remember parts of her old life.

Ms. Banks stood up. "Enough of that, it's time for the class." She walked past you to the door and opened it. Seconds later girls came in, greeting her while they walked towards their seats. Despite you had already seen girls like that, you were still surprised seeing them really wearing short skirts, high heels, a lot of make-up and white shirts showing even more of their big breasts than the teacher did. It was as if you were in a porn-movie. "Good morning girls." Ms. Banks greeted the class when everyone was seated.

"Morning, Ms. Banks." They replied in voices not matching boys at all.

"As I had told you last week, we will have an assistant teacher with us for the next six month. Please be nice to Ms. Alex."

"Morning, Ms. Alex." The schoolgirls greeted you.

"Miss?" You asked irritated, but nobody reacted to it.

"Then let's begin with your homework." Ms. Banks simply continued with her lesson. She went to the board and drew a semi-circle with a rounded baseline on it. She added two arrows, one pointing at the semi-circle, the other going around it and named the first R and the second P. "What is the formula to calculate the volume of a hemisphere? Lucy?"

"V=(2/3)πR³." The blond girl replied on the spot.

"Right, and with the perimeter of the base?"

A redheaded girl lifted her hand and answered:" V=S³/(12π²)."

"Good, Vicky." Ms. Banks confirmed. You were surprised that such superficial looking girls could do such Math on the spot. You barely could calculate the area of a circle, despite you knew that you had heard about these things before. "Ok then, Ms. Alex, if you would please take the measuring tape from the desk?"

You were surprised that the teacher suddenly spoke to you, again calling you a miss. You looked over the desk and finally found the measuring tape. You turned back towards Ms. Banks and your eyes and mouth opened wide as you saw her having taken off her shirt and bra.

"Now measure the perimeter of my breast so we can calculate it's volume." The teacher ordered you.

You hesitated embarrassed to do such a thing, which you would count as sexual harassment. But after her telling you again to do so, you did as you were told. With a bright red face you measured her right breast. "18 inch."

"So girls, what volume do my breasts have, assumed they are shaped like a perfect hemisphere?"

For a moment nobody of the girls responded, then one with long platinum blond hair and plump lips responded. "Around 1.300 cc"

"Good, Stacy. And what natural cup-size would I have, when 800cc come from implants and with them I'm a G-cup?"

Once more the girls calculated in their heads before Stacy responded again. "Just a pathetic B-cup."

"Very good, Stacy." Ms. Banks was clearly pleased with her. She looked at her class, then at you. "You could remove the measuring tape now."

"Oh, yeah, sure." You were really embarrassed that you were still touching her breasts.

"Good, then please present us what you calculated for your breasts."

One girl after the other came to the front, took their shirts and bras off and presented what perimeter, volume and cup-size their breasts were. Your face was bright red and your penis was rock hard as each of the 20 girls did so. They all had rather large breasts, the smallest just a DD-cup, while the biggest was an J-cup. Each of them had augmented breasts, the smallest with 600cc implants, the majority with more than 1000cc.

"Good, then let's begin with today's subject." Ms. Banks walked back to the board and drew something on it. Your mouth and eyes opened wide as you saw that she added a cylinder with diameter D and length L right under the hemisphere, making the drawing look like a penis. "Today we learn how to calculate the size of cocks, so you will know if they are the right size for your pussies or too small."

All the girls had an enthusiastic look on their face, while you were just shocked at how sexual the class was.