The teacher interupts her

"Anna?"

The sudden calling of her name from the front of the class gave her a jolt. Without thinking about it, Anna let go of the skirt and quickly placed her hands on top of the desk as if nothing were amiss. She felt the soft touch of the skirt falling between her legs as it fell to the floor. With her panties around her ankles she was now completely bottomless at the back of the classroom.

"Y-yes Mr Smith?" Anna replied.

Her gaze quickly shot around the classroom. She was terrified that she'd been caught, but the rest of the students were facing the board at the front of the room.

"Could you answer question number three on the board?"

Licking her lips nervously, Anna tried to focus on the algebra question written a few feet in front of her. It was no good. Her brain was panicking, completely unable to focus on the task in front of her. The longer she took to answer, she knew, the more likely people were likely to look back to catch a glimpse of the great and intelligent Anna failing, and the more people that looked at her the more likely they were to notice something was amiss...

"X equals seven, sir!" she blurted.

Mr Smith frowned. "Hmm... and how did you come to that answer?"

Anna took a deep, calming breath. She could do this. Pushing her predicament out of her head, Anna focused as hard as she could on the formula. Step by step she worked her way through it, re-arranging and recalculating until she came to the true answer; x equalled five.

Her brow was sweating with the effort.

"Very good." Mr Smith said at last. "See class? This is why I always tell you to show your workings. It's not just for my benefit; by breaking the formula down one step at a time you can simplify the formula, break it into components and it will be easier to find the answer. Now, Jeffrey, can you try the next question?"

With the focus off of her, Anna began to relax. It wasn't just her brow that was sweating; a nervous sweat had broken out all across her body, making her legs and behind feel slick against the plastic chair. She was still naked from the waist down, however, and she had no time to waste.

Pulling her panties up her legs would be the quickest, easiest thing to do, but the skirt provided the most cover so was probably the biggest priority. It can't have fallen far... could it?