re: "Got quite a problem here"
I think that as you gain more life experience, you'll find that not
being able to change a light bulb doesn't really count as "quite a
problem", but for now, I guess that's OK.
Having 2 kids in college, I seriously doubt that a burnt out bulb in a
ceiling fixture is cause for a penalty. In fact, I would not expect
the student to be responsible for either the purchase of nor
installation of the bulb. I would lean towards it being a safety/
liability issue where they would *not* want you accessing an
electrical fixture belonging to the facility. Think about falls from
ladders/chairs and/or electrocution due to a faulty fixture or user
error.
That said, I can not see the image due to restrictions on my corporate
machine, but I'm not sure that it matters. If you say there are no
screws, I believe you.
My best un-seeing guess is based on other screwless globes that I've
seen.
There are often very wide threads on the globe that screw into the
fixture. Due to heat, moisture, texture of surfaces, etc. these
threads can often bind in such a way that they are difficult to
unscrew. It may be so tight that you wouldn't even know that it could
be unscrewed.
If that's the case, I would once again point towards the dangers of
doing it yourself. If you apply too much pressure, you could crack the
globe and cut yourself. I seriously think that this is a building
maintenance issue and should be covered in your room and board.
Of course, if you or a roommate had previously removed the globe and
installed a non-standard bulb (e.g. a blue one) and that is the real
reason that you need to change the bulb, then I wish you luck...but be
careful!