[caw]

I think being in college you do have the position of staggered job interviews. At my college it was understood that there was almost always on campus interviews going on, so you could interview with 2 very good companies but two weeks apart. The second might not get back to you in time for the first, so what do you do? My first internship offer had 24 hour deadline, so I turned that down. The next one I had gave me a month knowing the campus recruiting schedule.

The other thing to do is check with your school's intern/co-op office and see if they have a minimum amount of time for a job offer. As I said before, my first job offer was 24 hours, but the school requires all employers operating through the school's listing service to give 2 weeks. If there's such a requirement you can use that as leverage to extend the date.