The interesting thing I found about college based EMS agencies was they tended to turn off a lot of people who came with experience. When I was on the college squad we had maybe a dozen people who came with experience, EMT certs, from busier agencies than the college squad. Almost everyone who was in EMS prior (myself included) left within two years.
all their supervisors were home grown (as in all their experience was college based), and many people were using supervisor positions just as a resume booster, nothing more. They "promoted" seniors to CC status, and if you were in the clique (prereq was being home grown), you were given the chance to succeed, if you weren't, you had no chance to advance. Also, I found it helpful to think of the agency as a private EMS agency, instead of a real 911 agency with an actual primary coverage area.
Oddly enough, quite a few homegrown people did go on to join local EMS agencies, a couple became EMT-Is and paramedics, and some even started working per diem for the local 911 service while in college.
but small agency politics, who likes who/who is sleeping with who/who wants to sleep with who, and who is part of the in-crowd (unfortunately) played a much bigger role in deciding who was a crew chief, instead of who actually knew what they were doing.
maybe my experience was unique, good luck on your journey to climb the ladder.