Today was the day! It took a bit of work to get here, and a lot of watching my student Aisling masturbate and fuck other male and female students in front of me, as well as occasionally skirting the rules with me, like when I walked in to my classroom to find her totally naked, laying on my desk with her legs spread. I just left straight away again to avoid doing anything before it was allowed.

The Friday beforehand, I did check with her about the art project she was working on, and she did say that she'd be in early on Monday to continue working. I wanted to know because I wanted her first.

I came into work that day excited, already hard. As I brought forward the idea, I was starting the week in the new free use wing. I walked over, and said good morning to Maria who was sitting on Mark's car and gripping his hair as she had him eating her out. I went in and found my new classroom, honestly, it was a good set up: spare school uniforms and plain clothes for the teachers, rows of high-pressure showers outside each classroom, cubbies of sex toys/tools in the foyer, and washing machines there too.

I went to the art room and there she was, alone, her black hair loose and down to he waist, school uniform pristine, skirt just covering her ass, wry grin on her face as she mixed paint. I walked in and cleared my throat, "oh, hi Mr. Williams" she said, she dropped the paint brush and turned around, making no move but just standing there.

I closed the distance and put a hand on her boob over her jumper. She made no move but a slight intake of breath. I squeezed gently and put my other hand on her thigh. I pushed that hand up under her skirt and slowly starting rubbing the edge of her pussy with my thumb over her panties. She sighed and closed her eyes. I took my hand away from her pussy and boob so that I could grab the hem of her jumper and pull it off. She lifted her arms to let me do it and then when it came off she unbottoned the top of her blouse, looked me in the eye and said "whatever you want to do to me, do it, don't ask, I have been waiting for you since I turned 18 and got my free-use license and now please please, just use me". I needed to hear no more, I ripped her blouse open and some buttons actually broke off. She was wearing a black lacy bra but I barely saw it. I pulled her blouse fully off and said "take off your bra". "Yes sir" she said and reached behind to unhook it before letting it fall to the floor. I bent down and sucked her left nipple while my right handed pinched the other. I felt her nipple harden in my mouth and hand and I bit gently on it, eliciting a slight gasp. I stood up, and pushed her head down, she understood and got to her knees. I took my cock out of my trousers and pushed her head towards it. This student put her teacher's cock in her mouth and began sucking, looking up at me as she did. I grabbed her head and began controlling the tempo, her eyes began to water but she kept looking at me. I heard her gag once or twice but it didn't stop me, if anything I started going harder. When I felt myself get close, I pushed her off my cock and told her to stand up. I turned her around and pushed her back down so she was lying on the table, her tits and belly were pressed into the paint she was using, I pulled her skirt up, then changed my mind and pulled it down, I told her to take it off and then lower her panties, she obeyed with a giggle of excitement. I grabbed her ass cheeks and spread them so I could see both her holes. I took my cock and rammed it into her pussy, it was so tight I actually had to extend some effort to pull it out before thrusting it back in. It would have been damn near impossible if she hadn't been dripping wet. She was moaning, I was grunting, the paintbrushes and other art supplies fell off the table as I thrust forward as hard as I could while my hands were in her hips and pulling her back into me as hard as I could. I slowed down to stop myself cumming and, still with my cock in her pussy, I stuck a finger up her ass and moved it back and forth, until my whole finger was in there. She turned to look at me and I stuck my finger of my other hand in her mouth. I then took my cock out of her ass and pressed against the entrance of her asshole. She looked at me, and slurred because of my finger in her mouth, she said "please". I pushed in, gently, every time I withdrew, I pushed a little further, I took my hand out of her mouth and grabbed her hair, pulling it back as I increased the pressure once I was comfortably in her ass. It was even tighter than her pussy but I had to spit on it a few times as I fucked to keep it wet. I was so close to cumming now so I pulled out and told her to kneel down again, she did and started pulling on my cock with one hand and massaging my balls with the other. I exhaled deeply and came all over her face and hair, I had avoided cumming all weekend for this moment, so her face was completely plastered, there were thick ropes of white cum all through her black hair and the load in her face was dripping onto her tits and mixing with the paint that I had pushed her into. She looked up at me and said "thank you" and that was so hot that I had to put my cock back in her mouth for a while, just for fun.

I took a step away from her as she put her clothes on, I told her not to put her underwear on, her blouse and jumper got smeared by going over her head and she left the room before I did, but she stopped just outside the door. I wondered why so I followed her out.

I had obviously lost track of time by Aisling distracting me and wasn't aware that the other students had arrived. It. Was. Carnage. Maria was on her knees, masturbating as nine or ten male students all masturbated over her, judging by the look and smell, they had all pissed on her before hand, which I know she loved. John, another teacher, was lying in the ground with a female student bouncing up and down on his cock and another sitting on his face. There was actually a queue of male and female students waiting for their turn with him. There was already a decent coating of cum and grool on the walls. Any student not with a teacher or waiting their turn were fucking each other. I was surprised but hardly had time to process my surprise as Phoebe, another student, pulled me aside by the hand and lay down on the ground and lifted her skirt "fuck me please" she said. I told her I just came so I can't promise a load but I'll fuck her, she said that was fine once I made her cum, so I knelt down, she raised her pussy off the ground, showing red hair that matched her head hair, and I went to it.

I have no idea how long the initial fun of free use lasted, but I can tell you that by the time we were all ready to get to class, there wasn't that much time left until lunch.