Took the back stairs which would lead to a school hall. Longer, but safer.

(chapter originally by Phantom Pen at writing.com)

While going through the auditorium would be faster, it would also put her in the same room as the entire school, and this time with her on the ground with them. The idea of being in a room with only a potted plant to hide her body from the eyes of the student body was decidedly unpleasant. No, it was safer to go through the halls. The rest of the school building should be empty, and so there shouldn't be too much trouble with making progress.

Carefully going down the back stairs, Yukari discovered that the plant didn't allow for the greatest ease of movement. The pot in her hands was in the way of her legs, restricting her to small steps that hampered her speed. Furthermore, the plastic leaves brushing and bumping against her body were heavily distracting, especially the ones covering her most important bits. This was absolutely insane, and Yukari knew it, but she also knew that she had ****.

Reaching the bottom of the stairs, Yukari carefully pushed the door open with her foot, timidly stepping out into the hall. Just as she had expected, the coast was clear. With everyone in the auditorium, Yukari was sure to have a clear path to the gym. With as much speed as she could muster given the obstruction of the plant, Yukari scurried through the hall. Every few steps, Yukari stopped to turn her head and check behind her, making sure that nobody had stepped into the hall behind her and got an eyeful of her ass. Thankfully for Yukari, she didn't see anybody whenever she looked back. Still, the frequent stops were making Yukari's already arduous trip take even longer...