In response to the previous two replies, the crane service "only" costs $300, not the full $550. The extra $250 would go to hiring an electrician to disconnect service and remove the control cabinets before the main siren unit is even removed.
Eric (Greene), thanks for mentioning that. That's what I intend to do if the district will not let me in there before the demolition contractors arrive. I will try and offer them some $$$ and see if they can pull it off the roof before they fully blast the school to pieces.