iPhone unable to stop shsring location

iPhone and iPad: You can go to Settings > General > About and look for this line of text under the name of the device: “This [iPhone] [iPad] is supervised. [Organization name] can monitor your internet traffic and locate this device.”

About Apple device supervision

If your iPhone or iPad isn't currently supervised, your administrator has to completely erase your device to set up supervision. 

Get started with a supervised iPhone or iPad