When i was a freshman in highschool, i took a course i forgot its name but it was to do with building houses and stuff like that. Carpentry is the closest thing i can think of. Anyways, the principal asked us to help find the source of a small infestation of flies in the vents. They were coming in and out of the grates. We suspected that something like a rodent or bird died inside, so he sent me to go locate it since i was done my project. I took a flashlight, and donned me gloves and climbed into the shaft. I traveled all along the shafts every 10 meters~ there would be a grate leading to a classroom. I had to avoid them or i would fall right through. As i neared a dead end, i noticed some steam rising out of the grates. I looked down to see the guy's changeroom. It was right over the showers. Disgusted, i hurried past. Further down, i passed another grate. This time above the toilet stalls. The next one past that was the actual changing area. I was going to turn around, when i thought, if i can see the boy's changeroom, why not find the girls?? I went down the parallel tunnel and jackpot. Exactly like the boys, i was above the girls. I was in heaven. I was horny and probably 15 years~. So this was gold to me. I peeked on the grade 9-12 girls showering, changing, peeing, and even changing tampons. I was aroused and curious. Then i saw her, a grade 12 named Marin. She was the hottest girl ever. I follwed her around the changeroom. Moving from grate to grate to keep her insight. Then finally, she went into the showers. I jerked off above her watching her scrub her body. I came, shooting a huge load right above her. I watched the cum drip down onto her.