My bicycle got stolen from outside my building in broad daylight.  I would suggest using a big solid u-shaped lock and fasten your frame to one of the more solid bicycle racks available some places on campus.  I borrowed a bicycle for current use.  I am using a hand rail on the back of my building because the bicycle racks at my building are not designed for these style locks.  It is out of the way, not blocking access in any way.  Stay safe out there!  Bike on!