ParticleGrl said:
<snip>Are administrators gobbling up increasing costs, or is it expanded amenities (i.e building a rock-wall in the gym to attract students)? Or something else I'm not seeing? <snip>
While admin salaries and shiny buildings get all the attention, reality is much more mundane. Once you understand institutional finances, you will better understand the pressures to oversubscribe popular programs like for example, Medical Physics.
Some costs apply across the institution: Who pays the janitors in those buildings? Who pays campus security? During the summer when enrollment is very low, does campus remain fully open? Other costs do not occur uniformly, but are limited to specific colleges/departments/programs, such as: hazardous waste disposal, insurance premiums (not just lab equipment, but also liability insurance), safety office personnel, consumable items, etc.
How are these expenses paid for? Tuition and lab fees cover a large percentage. Tuition money is distributed to colleges and departments in a very straightforward way: multiply the number of 'student credit hours' (a number obtained from the registrar) by the cost of a credit hour and you're done. Of course, not *all* the tuition money can be distributed to colleges, since the janitors have to get paid.
At the college level, there are again 'institutional' costs (hazardous waste disposal, etc.) that uniformly apply, and departmental-specific costs (faculty and staff salaries, lab costs, etc) that do not. So again, at the college level they look at the distribution of student credit hours and give that money to the departments (less their 'cut'). I'm not sure what fraction goes to the college and what fraction goes to the department, but a reasonable estimate (based on how my indirect costs are distributed- we haven't even started on extramural funding...) is that 50% stays with the institution, 25% goes to the college, and 25% goes to the department.
Our typical medical physics class has about 10 graduate students (we don't restrict enrollment just to med. phys. students), so each class generates $20k of tuition revenue (10 students, 4 credit hour class, $500 per credit hour (in-state)). We don't get the whole $20k. A lot of it stays even higher to pay for journal subscriptions and wireless network installation and all that other stuff. That means the medical physics class generates $5000 in revenue for the college and $5000 in revenue for the department.
What are some department expenses? The largest is salary. Let's see if the Medical physics class revenue covers my salary expense. Nominally, I am contractually obligated teach 4 courses per academic year. My salary is publicly available information, to which 33% must be added for fringe benefits. Now the question is obvious: are the student credit hours high enough to cover my salary? For some classes, yes. For other classes, no. If the department's costs were strictly limited to salaries and I taught *only* medical physics classes, then if my salary is higher than $20k, the department would be unable to pay me. This is a problem- at least for me (and the institution, should it wish to retain faculty for any length of time). Hence, there is real pressure to increase enrollment as high as possible.
I'm not sure what the 'break-even' point is for class enrollment, but it's clearly higher than 10 (remember that we can only accommodate 4 med phys students per year, and of those, 1 or 2 are guaranteed residencies).
Not all classes are low enrollment. I also teach college physics I and II, with an average enrollment of 40 students (at 5 credits, this generates $77,200 per semester!). Redirect one credit towards lab costs, and the department receives $15440 towards my salary (even so, it still doesn't fully cover the required fraction of my salary). That is, the intro class 'subsidizes' the medical physics class. Extramural research actually works the opposite direction: I am granted course release time without having my salary covered by the grant, so tuition dollars subsidize my research time. As an aside, given that many NIH awards *do* cover salary, faculty at research-intensive institutions are much more dependent on obtaining NIH funding to ensure they get paid (so-called 'soft money').
We don't control enrollment (other than having admissions standards, which necessarily *lowers* enrollment from what it could be), so why should the institution allow low-enrollment programs to exist? Sometimes, they don't- programs are closed down all the time. OTOH, if the low-enrollment program is viewed as 'potential for growth', it can exist (as long as it is subsidized somehow). But it should be clear that there's no way for an *intentionally* low-enrollment program to exist indefinitely without an explicit effort to ensure it remains subsidized.
Alternatively, we could admit as many med phys students as we can fit into a lecture hall. But, IMO, that's not in the best interest of the student.