I wanna take my iphone 5 to school but i'm afraid if someone would steal it?

I got an iphone 5 for my birthday and i'm i wanna take it to school but i'm afraid if someone would steal it cause a month ago a guy in my class had an iphone and someone pickpocket him or something i don't know

so how do i keep it safe tell me what i should do to avoid this happing to me

To keep it safe, don't take it to school

You shouldn't worry about it. Just keep a close eye on it at all times. Also there's an app called Find My IPhone, so you can get on a computer and know where it is at all times. Thus being said if it did get stolen (which it shouldn't) you would be able to get it back.
Hope I was of help!