Upskirt in Class

I have been reading stories on this site for a few years now. Finally I decided to contribute. My story takes place back when I was in the eighth grade. I went to a private Catholic school. We were required to wear uniforms. The guys had to dress in navy blue pants or shorts if it was warm and a white collar shirt. The girls also wore white shirts with collars and a navy plaid skirt. Most of the times the girls would wear gym shorts under their skirts. After the first period, classes switched and we headed to the next class. When we got to the next the next classroom, the door was locked and no one was in the room. After a few minutes we all sat our books down and took a seat on the floor along the wall of the hall. Jessie was sitting across from me on the other wall with her knees up. After a moment I noticed I could see up her skirt. My eyes travelled up her legs to her crotch. Her leg hole was off to the side and I looked further up expecting to see what color her panties were. I could not believe what I saw. She didn't have panties on and I could see bare skin up to the top of her leg where it meets her crotch. The teacher took the class outside and was five minutes late. We continued sitting and talking. Being 14 and always horny, I kept taking glimpses up Jessie's skirt. After a few minutes she moved a little and my shorts moved further to the side. I looked up her skirt again and this time I could fully see her slit. This made me go from semi-erect to full on hard. I was probably staring at this point. Finally the teacher returned to the classroom and let us in. I had to hold my book in front of my crotch to hide my woody. All class long I was thinking about Jessie's pussy and the things I wanted to do with her. After that class, we moved to the next class. In the next class we were reading a novel, but of course I was not paying attention. I was still thinking about Jessie. It wasn't even lunch yet, and I couldn't wait to get home to masturbate. After ten minutes reading the novel as a class, I just had to get off. I took my hard on and pushed it up my waist band and the head of my dick was under my shirt, but it was still hidden under my clothes. I sat in the back corner and no one was paying attention to me. If someone was to notice it would be my friend Katie, who sat in the desk next to me. I started to rub the bottom of my dick through my pants. This was the first time I ever masturbated in public. Just thinking of getting caught turned me on that much more. As I was slowly rubbing my cock I would look over at Katie to make sure she wasn't looking at me. Plus, she was hot. I was planning to not cum until I got home. Katie would look over my way but not at lap. At one point, when I was looking over at Katie she looked down towards my crotch. That was it. I started to tense up and began to cum in my pants. I pushed on my dick just under the head so I didn't cum all over my shirt. Katie didn't say anything, but she had to have known something was up. I was able to clean up my cum with my undershirt. Right after class I went into the restroom right across the hall and took off my undershirt and put it in my locker. When I finally got home that afternoon, I had a few hours to myself. I got on the internet and jerked off to upskirt pictures while thinking of Jessie's slit and Katie looking at me while I was cumming.