I just got a new phone and was supper excited till a message popped up on my screen saying basically that my parents could track me through me phone.

I’m no perfect teenager and I do things I shouldn’t always do, that often involve me saying I am someplace different there where I really am. So I am screwed now.

How can I get around this, I could turn off my phone, but that would be pretty obvious. Help me please? If you have this on your phone, what are your ways of getting around it?
They cannot read the stuff on my phone, just a GPS signal is sent out and my parents can find out where I am from that.
I figure I can leave my phone in my locker when I want to ditch so it seems like I am still at school, but other than that I am lost.