> they certainly find such salaries for administration
This is one of those claims that in a way has become 'common wisdom', but that I've seen no actual evidence of. I wonder if it's just one of those talking points of people who want to cut taxes that has never been challenged or at least defined, like "government waste". It's like an end-user saying 'my computer's software is buggy' - that doesn't tell me anything, and for all I know it's your power supply, monitor, or a million other possibilities, or even a matter of perception by a user in a bad mood or with a bias.
Especially we don't know the problem definition: Which administrators are overpaid? How frequently? Is it certain administrative jobs? In certain size districts? Is it due to some other problem? And which administrators are underpaid?
Finally, while we should pay attention to these issues, let's not catastrophize every problem into a organizational disaster. I know plenty of administrators in business who are overpaid; the perfect human institution doesn't exist.