Chemistry, where Rachel conveniently spills something in her shirt.

"Well, today's monday, so we have chemistry first, i'll tell you about my plan there", you said.

"Alright i guess", replied Rachel, upon which, the both of you entered into the school.

As you entered into the school, naturally many people turned their attentions to the naked girl, you, and to the girl without an skirt, Rachel.

As you were naked, you naturally recieved the lion share of attention from the students and teachers, and you naturally used this opportunity to show off yourself, for you are an exhibitionist who likes being in the nude.

Rachel for her part, didn't attract as many people as you, and even then, she was very nervous due to this being her first time doing anything like that, and thus, covered her behind as she walked to the chemistry lab.

As you arrived into the chemistry lab, the teacher there was understandably shocked at your state of clothing.

"What in heaven's is wrong with you two to not carry you lab coat with you", he yelled, as if being without a lab coat, was for him more important than being underdressed.

"Sorry, we forgot it at home", you simply replied.

"Alright, you may pass, but the school is not responsible if anything happens to you two", he replied, upon which, you and rachel took a seat next to an empty counter.

"Alright Rachel, this is the plan", you said, "When the teacher instruct us to do the experiment, i'll make like i tripped and then you will 'accidentaly' spill the chemical over your shirt", you explained.

"Are you sure this would work", asked Rachel. "Yes, i am", you responded.

With the plan of opperations decided, you and her, continued to work on the class, at least until it was time to execute the plan.