How to get rid of the camera option on the iPhone lock screen?

I lock my iPhone, but even when it is locked, people can still take pictures with my phone. In class we have to leave our phones in little cubby things, and I often find selfies from random people in my class. Is there a way to get rid of the option on the lock screen?

There's not way to take it off. Your best bet would be to turn it off or possibly tell your teacher.