So basically, my parents track me every single time i leave the house using Sprint's family locator. Is there any way i can turn this off so they wont be able to track me?

Or does anyone have any ideas of what I can do so i wont be tracked? I dont really like the idea of not bringing my phone with me, cause i DO like calling them to let them know where i am and that im doing fine! I'm 17 by the way. Any thoughts or suggestions? Thanks!