system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If college tuitions have been steadily rising, but my classes are taught by temp professors making $3k per class, and construction is paid for by donors, where do the 100% tuition increases go?
gpt
A lot of hot-headed responses already, but here is where most of it actually goes:

- Administration. There are far more administrators than there used to be - many of whom are business-type people who think in terms of "revenue" and are there to make money for themselves and their programs. It isn't like they're all cutting themselves huge personal checks, but each one has secretaries, a "program", spends money on outside contractors and advisors, creates costly 3- to 5-year projects that look great on their resume but cost the college in the long run, etc. This is called administrative bloat and is a huge problem.

- Advertising. The main issue with colleges nowadays is attracting high school students. They need to spend money on consulting, "crafting an image", employees to do recruitment, financial aid advisors, direct mailings, not to mention the maintenance involved in keeping the college in top-notch beauty condition so that parents of prospective students are impressed. You'd be surprised at how much those snacks and water, along with all the wait staff, add up in cost. 

- Facilities. Yes the building was paid for by some rich alumni, but now you need electricity, water, garbage, maintenance (inside and groundspeople outside), upgrades, new technology licensing, a secretarial staff, etc. You need fancy dorms to attract those students and their parents, and keeping stuff clean ain't cheap. 

- Health care and related perks. Professors are really smart people, and don't get paid a lot, but in exchange they get lots of free time and all their needs taken care of. This means that, even though they're way cheaper than similarly-qualified employees in the business world, they need a good healthcare plan, retirement, dental, etc. All those things have gone up a lot, and in fact most businesses have dramatically cut them because they are so costly. 

- Laws. Students need health facilities, safe-spaces, Title IX counsellors, up-to-code and beyond facilities, etc, and all of that requires staff (usually under a new administrator) as well as equipment and a budget to run the office.