For your information:
Today there was a report of a ‘drone’ flying over and around the school site during the lunchtime period. Not surprisingly this did create some excitement amongst the children and I am sure that if they saw it they may share this with you.
I am aware that building companies/surveyors often use such devices to make assessments and compile reports, likewise enthusiasts can be seen to fly such devices regularly.
There is no indication that this was a malicious act or similar, however it has been reported to Derbyshire Police and they will be briefing officers.