Swimmingly

Luckily, for the first time in what Anna felt like forever, Miss Wilson did all the experiments and explained all the theories without asking one of the students to come forward and explain it for the class. Anna only assumed that it's due to the upcoming exams, and Miss Wilson wanted to make the explanation shorter so she could fit other topics during her class.

Once class was over, all students immidiately made their way onto the exit, whilst Anna stayed whilst pretending to search for something her bag just to not look suspicious, despite the fact that the only things on her bag were a bunch of pens which had ran out of ink, and a chocolate bar which she bought a few days ago. Anna was now grasping the two pieces of paper onto her legs as tightly as possible, since it may fell off if someone came too close to her.

Soon enough, everyone including Miss Wilson had left the class, leaving Anna all by herself. Despite being alone, she was still placing the two papers onto the front and the back of her panties whist half-crouching, since there's always a chance that one of her classmates reenters the class while she was searching for her skirt.