How to prevent getting my iPhone stolen from the school locker room?

I'm getting a new iPhone in a few days and I don't want it to get stolen in the locker room. I want to bring the iPhone to school and how can I prevent it from being stolen in the locker room? Is it normal that I have a fear of my phone being stolen because it got stolen once before and I don't want it happening ever again!

Its okay, I would worry too, but i don't think anyone would rummage through your bags. You should be fine and if anyone does, download the find my iPhone app once you get it.

Its ok.

Don't take your phone to the locker room.

Don't leave it anywhere why would you anyway?