How to keep my iphone 6 safe in the P.E locker?

My mom just buy a iphone 6 woth a case for me.
But my friend also have a iphone 6 crack inside His p.e locker. I been wondering it also might happen to me too. So is there any safe way to put my iphone 6 in my locker.

Was there an earthquake while the phone was in the locker? Otherwise, I don't know why the phone would just crack sitting in a locker. Your phone should be fine with a case sitting in a locker.

Don't keep an iPhone 6 in a locker room at a school. It can get stolen, I used to keep my old 3Gs in my regular locker when I went to high school!