At both the University and college in my town I would find it doubtful that staff or other students would be able to access student information in any kind of hurry due to privacy laws. That assumes that the people who found her had any idea who she was initially- in the rush to call an ambulance many people will not think to check for wallets or other ID. In a school where there may be at any time 4-10k students, 2-3k staff and support staff- not counting other non-enrolled visitors, contractors, family members etc.... there were many times at my school where I couldn't have told you if the person in front of me was student, staff, janitor or member of the band playing at the pub that night. Running into the registers office to ask for the home phone number of "that girl with the red backpack wearing gym shorts", for example, would be unlikely to get me anything before the ambulance showed up.