Yes, 90% is me being a little facetious. I don't know the exact number. But I saw the waste first hand. My college ran large parts of its operations for the benefit of the employees, to the active detriment of the students and everyone else. For example, dining employees were easily paid 2x market wage, probably 4x counting fringe-benefits, while students were forced to pay for a wildly overpriced meal plan that robbed all of the local restaurants (which were all within a quarter-mile of the three dining halls) and supermarkets of business.
They also ran a fancy hotel that charges many hundreds per night, right in the heart of campus. They consistently failed to make a profit for years and then totally bungled recent renovations, going 3x over budget and delivering behind schedule. Here's an interesting (and admittedly biased) blog post documenting that sorry saga: http://www.dartblog.com/data/2012/01/009957.php
Throughout the country, tuition has risen many times over in the past few decades, but the money isn't going to hiring more professors. It's going to hiring more and more college administrators and staff, and on loss-making sports programs that go well beyond recreational athletics. Every single type of minority possible had at least one administrative department dedicated to them, each with multiple staff members, and often with physical plants. Many (most?) of these were straight-up indoctrination outfits, pushing critical-theory Marxism on students, teaching them that they're the victims of the white establishment, and fanning the flames of campus protests.
Don't take my word, ask the American Association of University Professors:
>The increase in spending on administrative functions, coupled with a decline in state funding relative to institutional operating expenses, is clearly connected to the continuing increases in tuition prices on many campuses. As we have noted in this report on several occasions in recent years, faculty pay is not driving up tuition costs. In fact, the stagnant salaries paid to full-time faculty members combined with the increasing use of lower-paid part-time and non-tenure-track faculty appointments have been reflected in the lowered relative spending on instruction documented earlier in this section. But don’t just take our word for it. The most recent report from the Delta Cost Project concluded that “faculty salaries were not the leading cause of rising college tuitions during the past decade. Increased benefits costs, nonfaculty positions added elsewhere on campus, declines in state and institutional subsidies, and other factors all played a role.”
Source: https://www.aaup.org/reports-publications/2013-14salarysurve...
This guy from the New York Times agrees with me: http://www.nytimes.com/2015/04/05/opinion/sunday/the-real-re...
An NPR article: http://www.npr.org/2012/06/26/155766786/whats-driving-colleg...
The LA Times: http://articles.latimes.com/2010/sep/12/opinion/la-oe-dreifu...