In addition, many schools tend to offer free ride for senior administrators to get advanced degrees.

In addition, many schools tend to offer free ride for senior administrators to get advanced degrees. For example, a VP in a small community college can get PhD/DBA etc at a connected University free of cost while flexing his/her power to get by the program.

You can also check out my analysis on educational cost in www.srikanthkidambi.com written three or four years back.
http://redalertpolitics.com/2016/12/05/inflated-college-administrator-salaries-hurting-students/