Charts. Very interesting charts.

"This folder has some papers and charts. They might be a little weirdly organized when you first look at them, but it'll all become clear pretty quick." Sarah explained, as she took out two pieces of paper and handed them to Anna. "They're laminated, so you know we're professional!" Sarah added with a wink. She took a spot on the locker room bench and patted a spot next her for Anna to sit.

Anna looked around at all the other girls, who seemed to be approving and curious. She kept her hands over her intimates, and took a seat next to Sarah. It was very strange to feel the cold wooden bench against her naked skin. Everything had gotten so surreal so fast.

Anna looked at the first piece of paper presented to her, seeing that it was a map of the schools ground floor. "A map?"

"Mhm, and this one's a schedule." Sarah said, presenting a different chart. It presented every class room and every class period. Many classes had red X's in their box, some had green check marks, and others had yellow question marks. There was also smiling faces, frowning faces, and confused faces in some of the boxes. Some boxes had two symbols in them.

"I don't understand, what is this?" Anna asked.

"Try not to smudge these, they're dry erase." Sarah started. "See, the red X's means a room is proven to be occupied during a class period, and it's a bad place to get naked. Double X's represent a spot someone's been caught at before. The green check marks means there'll be no class during the period, and it's a safe place to hide. Double checks means the room isn't even in use."

Anna looked at the map, seeing only one room with the double green check marks. It was the room that was right next to her math class, the very place where she really started to lose control of herself. "Oh... I've um..." She blushed, and pointed to the room on the map, "I was in there... earlier."

"Oh cool!" Sarah said suddenly. "So you know this is true then! You could have hid in there and masturbated all day and nobody would find you!" She explained as if it were a completely normal thing.

At this, Anna blushed, having done that very thing. "S-so, these other symbols?"

"Right, so the question marks mean we're not sure about that room, nobody was able to check yet. Frowning faces mean there's a teach you don't want to meet, you will get in trouble. Smiling faces means there's a teacher that's..." Sarah bit her lip and tilted her head left and right. "Okay with us doing this? There's only two in the entire school that we know of, Mister Jackson and Miss Sayma. And of course, the confused faces are untested waters."

Anna couldn't believe this. How much time had went into figuring all of this out? All this just to be naked for a little while? "Wow... a lot of work went into this. How did you all figure this out?" she asked.

"Careful inspecting," Sarah stated. "Obviously we couldn't hit every room in the school. Usually by the time we have the entire schedule mapped out, the semester changes and we have to make a whole new chart." She pulled a few more pages out. "We got the other floors too if you wanna look."

There was no hiding Anna's curiosity. She wasn't even trying to hide her nudity from the other girls anymore. Those charts had consumed her attention. All kinds of usable hiding spots were right there and mapped out for her. "This is amazing..."

"We only get so much time per period," Sarah explained, taking the papers back and putting them in the folder. "We can talk more if you're interested in joining us, but right now we have a whole gym to ourselves." Sarah stood up and did a stretch, unashamed to show herself naked. "You can follow us, or think it over, whatever you want."

Sarah began to walk towards the door that lead to the gym.

"What about Kelly?" Said one of the other girls. "She might not be able to get herself out of trouble."

"This room's the fallback location, she'll be safe." Sarah stated, heading towards the door.

Anna watched as the girls slowly left the locker room and made their way towards the gym. Her curiosity was strong, and those girls could help her really explore her newly found fetish. She glanced towards her bag, containing all her clothes, being a reminder that she would be missing a lot of classes to run around naked.

She looked towards the gym door. The gym was supposedly safe, Anna saw the green check mark. At the same time, she also wanted to wait, and think about what she was doing. She could also hear the shower still running, likely meaning Kelly was still in there. Maybe Anna could talk to her, but Kelly seemed to be extremely shy.