I guess it leads to the question does a flat battery/start motor what ever, require an MEL/PUS.
I would say that it does.
If it did, then if found acceptable by the CASA owner/operator then there would have be a procedure attached to that MEL/PUS.
Unfortutarley or fortunately depending on which side of the fence you sit, times are a changing!
Do many schools have MEL's?
If not why not?