"While some administrative posts continue to be held by senior professors on a part-time basis, their ranks are gradually dwindling as their jobs are taken over by fulltime managers. College administrations frequently tout the fiscal advantages of using part-time, 'adjunct' faculty to teach courses. They fail, however, to apply the same logic to their own ranks. Over the past thirty years, the percentage of faculty members who are hired on a part-time basis has increased so dramatically that today almost half of the nation’s professors work only part-time. And yet the percentage of administrators who are part-time employees has fallen during the same time period."
In a 2011 Washington Monthly article, Benjamin Ginsberg describes how to cut college costs.