Is there a lousier job in the world than that of a school administrator. For the past twenty years, it has been all of the responsibility and none of the power. Yet a building principal (and to some extent a superintendent) have enormous control over a teacher's workplace-- how miserable is it, how safe is it, and how hard is it for teachers to do the job they signed up to do?
Administrators come in all shapes and sizes these days (though they are still mostly men), especially since the last twenty years of reformy baloney has done some bad things to the hiring pool. But there are still good ones out there who somehow find a way to fulfill the basic function of an administrator-- that is, to provide the tools, setting, and processes that encourage your people to do their best work.
But there are other admins out there. Bad ones. This taxonomy is by no means complete, but here's a quick introduction to some of the species you might find yourself dealing with: