...requires among other things a level of commitment to the welfare of your students. It's long nights planing your lessons and making reports because you always have to answer to some administrator who's always wondering why the kids' scores aren't what they were supposed to be. You often pay for class-related expenses out of your own pocket because getting approval takes too damned long. It's listening to students bullshit about why they didn't hand in their papers on time.
And I really can't do this anymore.