Simon: I don't want to have to order a student to strip naked in front of me to use the safety shower. What if it's traumatic and it creates a mental scar more painful than any chemical burn? There's NO OTHER high school situation in which something like that would be acceptable.
Mel: We have to make safety procedures a normal thing. Modesty shouldn't MATTER when you're risking a permanent injury, and if you act like it's a big deal, you'll MAKE it a big deal.
Simon: I'm not making MODESTY a big deal. I wouldn't care if the students CAME to CLASS naked. It's about me exerting authority over minors in a way that could easily be exploited.