One of my mates had his daughter go to Uni. Bike theft is always a problem so between us we built up a bike. Old frame and forks and a set of wheels that although were old with the ally spokes and 5 speed freehub- were a good sound set of wheels. Took the labels off the LX deraillers and put a Suntour sticker on the LX crankset. Found an old stem and bars that were rusted but were good and scratched a lot of paint off the frame and let it go rusty.
The bike looked terrible and if there were 100 bikes in a rack this would have been the last one to be borrowed. But it rode fantastic.
The only way to secure a bike on campus is to have your hand or your butt on it at all times so look at getting an old beater that you can afford to lose.
But as you might take the chance then get the best D Lock with the highest rating you can find. And get a hawser to secure the wheels-saddle and anything else that can walk to an immovable object. And that includes the bars- stem and forks that can be removed with just one allan key and 2 minutes.
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How long was I in the army? Five foot seven.
Spike Milligan