This is exactly why my child wears this https://kidsoclock.com.au/ to school, we have it set up for a 500mtr 'ringfence" at the school.
If at any time the watch moves out of the 500mtr "perimeter ringfence" my wife and I get an immediate alert sent to our phones.
Then we can track the location via google maps with live updates, can also discreetly call the watch and listen to what it's microphone is picking up.
Plenty of features, panic button that instantly calls both our phones, and can use it for normal calls and also video calls.