Who's going to pay for a bunch of drones to sit in every school waiting for years and years for something bad to happen? Are drone operators supposed to just sit around waiting while they recharge batteries and practice drills from time to time...
Indeed! If you're confirming that direct sunlight on your mobile device is causing the issue, then flying in the shade is likely the easiest solution. If there are no shady areas nearby, you could make your own shade.